Category Archive: Uncategorized

Venturi Valve: What You Need to Know

What Is a Venturi Valve?

venturi valveA venturi valve is an hourglass-shaped tube, with either end of the valve having a wider diameter than the narrowed center. Inside the valve is a cone that moves parallel to the body of the valve. As pressure within the valve changes, the cone moves forward or backward to modify flow rates through the valve assembly. 

Venturi valves are specifically designed to provide flow regulation in response to pressure changes. HVAC ducts use venturi valves as airflow control valves to regulate and maintain airflow through the system. Unlike other methods, the venturi valve independently regulates airflow in response to changes in static pressure, without the need for communication between system components. The independence and fine control offered by venturi valves makes them ideal for maintaining both constant and variable airflow based on external conditions.

Venturi Valve Options

Venturi Valve
Venturi valves are available in a variety of factory-programmed calibrations to meet the specific requirements of numerous applications. They can be composed of a wide range of materials, including aluminum and steel, and are often treated or coated to enhance strength, chemical resistance, and corrosion resistance. Thermal insulation can also be added to the valve to reduce thermal loss and increase energy savings. Numerous valve flow designs are available depending on the needs of your application. 

Constant and actuated valves are the two most common venturi valve designs. Constant volume venturi valves are engineered to provide a steady flow of air or fluid through the valve, regardless of duct pressure fluctuations. They are best suited for outdoor airflow regulation, ventilated cabinets, and biological safety cabinets. Actuated valves are typically used in dynamic systems where quick valve operation is critical. They use a cone situated on top of a shaft to restrict the flow of air through the valve opening to ensure consistent control. 

Advantages of Venturi Valves

Venturi valves offer a variety of benefits for a wide range of applications and industries, including hospitals, universities, biological safety cabinets, and laboratories. They are incorporated into ventilation and HVAC systems to provide consistent, accurate control of pressure, temperature, and airflow.

Venturi valves are highly sensitive and operate independently, making them quick to respond and reducing the need for extensive room pressurization testing. They react extremely quickly to signals, making them perfect for sensitive operations in labs and ventilated cabinets. 

Some venturi valve designs incorporate full shutoffs, which will keep the valve closed when not in operation in order to save energy. This energy efficiency is compounded by thermal insulation, which reduces thermal loss. 

Why Partner with Metal Craft Spinning and Stamping?

Metal Craft Spinning and Stamping is a premier manufacturer of quality HVAC system components, including venturi valves. Our state-of-the-art metal spinning manufacturing process allows us to create highly durable, long-lasting components that can withstand even the most extreme operating conditions. We are pleased to offer venturi valves in a wide range of materials, including aluminum, cold-rolled steel, and stainless steel, and we are capable of providing custom manufactured valves in a wide range of sizes. 

In addition to our exceptional metal spinning techniques, we use laser cutting technology to enhance your product quality. Using cutting-edge laser technology, we ensure highly accurate, symmetrical fan housings for optimal valve operation. With decades of experience, we understand the unique complexity of venturi valves, and we ensure highly effective, durable designs based on customer requirements and specifications.

Contact the Experts at Metal Craft Spinning and Stamping

Since 1964, Metal Craft Spinning and Stamping has been pleased to offer a wide range of metal manufacturing services, including metal stamping and spinning, and engineering. We pride ourselves on producing quality products and components for customers in every industry, from architecture and industrial installations to HVAC systems, lighting fixtures, and even furniture. To learn more about our venturi valves and other products and services, contact us today or request a quote to start your order.

Copper Post Cap Production and Applications

Copper Post CapsWooden decks and fencing need to be protected from the elements to keep them rot-free for extended periods of time. To achieve this, fitted caps can be installed on the top of posts in order to preserve them. While these caps can be produced from many materials, copper is a particularly long-lasting and attractive choice.

At Metal Craft Spinning & Stamping, we offer copper post caps designed to enhance the architectural features of your home or building while preventing wood rot. As a cost-effective protection option, our copper post caps are simple to install, and they are compatible with most post sizes. Copper post caps offer many benefits, making them useful in a wide range of applications. 

Copper: A Smart Choice in Post Cap Production

Copper is a widely used alloy, and its beautiful appearance has led it to become particularly popular in decorative applications. Additionally, its excellent ability to conduct heat and electricity along with its high resistance to corrosion and good formability has allowed it to be used in many industries, with applications in roofing, lighting, and electronics. 

One significant attribute of copper is that it can be remelted and used again without losing any of its chemical or physical properties. This has led it to be one of the most widely recycled metals. Copper can also be combined with other metals to form alloys, with the two most common copper alloys being brass and bronze.

How Post Caps Are Made

When producing copper post caps, the first step is to specify the required size and decide on which design elements the finished product will have. Next, metal stamping and spinning processes shape flat metal into the desired post cap shape. Metal spinning can be used to create products from 1 inch to 8 inches in diameter, while metal stamping is used to create many shapes and features. 

Spinning and stamping are both cost-effective processes with quick production times that lead to a weld-free, smooth finished product. Whether you require high or low volume production, Metal Craft Spinning & Stamping can manufacture the metal components you need. If you need help selecting the best metal forming technique for your application, our experts are here to assist you with every step of the process. 

Copper Post Cap Applications

Copper post caps are not only decorative features that add to the beauty of your property, but they’re also an extremely important protective asset for your posts. Properly capped posts remain in good condition for years, saving you lots of money on the cost of replacement. Post caps can be produced according to nearly any design plan to match your personal taste and style preferences. 

There are many possible applications for copper post caps including: 

  • Marine decks
  • Yard decks
  • Rail posts
  • Fences
  • Mailboxes
  • Arbors
  • Gates
  • Lampposts

Metal Craft Spinning & Stamping delivers custom-fitted post caps according to the specific measurements and design ideas of your project. Whatever your application, our team of metal-forming specialists will deliver accurately fabricated pieces. 

Copper Post Caps from Metal Craft Spinning & Stamping

If you’re considering adding copper caps to beautify and preserve your fence or deck posts, Metal Craft Spinning & Stamping has a cost-effective custom design solution that will meet all of your needs. Copper in particular provides a sophisticated look that will continue to shine well into the future. For more information about our copper post caps, or to get started on your next project, contact us today.

The Value of a Custom Metal Spinning and Stamping Partner for Commercial and Industrial Lighting Needs

Lighting is a critical element of industrial and commercial facilities. In addition to illuminating working and living spaces, it is used to encourage purchasing behaviors in consumers, establish conditions that boost employee alertness, morale, and productivity, and create areas within facilities that are both functional and aesthetic. The design, configuration, and luminescence level of a lighting system are generally tailored to accommodate the unique requirements and restrictions of the specific application.Commercial Lighting

The following article outlines the differences between the lighting systems used in commercial and industrial facilities with regard to the applications in which they are used. It also provides an overview of the custom lighting products and engineering capabilities available at Metal Craft Spinning & Stamping.

Commercial Lighting Applications vs. Industrial Lighting Applications

Industrial Lighting As indicated above, lighting systems are used in commercial and industrial environments. While commercial and industrial lighting systems consist of the basic same components, they are used in different types of facilities for different purposes. For example, in the commercial sector, lighting systems are often used in the following facilities for the following purposes:

  • Government institutions to brighten areas highly trafficked areas such as lobbies, hallways, and halls
  • Hospitals to improve employee visibility during delicate procedures and ensure personnel remain awake and alert
  • Offices to keep employees alert and encourage productivity
  • Retail stores to create bright and inviting environments for customers
  • Roads and sidewalks to improve visibility for drivers and walkers
  • Schools, colleges, and universities to provide lighting conditions that improve the functional and aesthetic qualities of the various areas

In the industrial sector, lighting systems are often found in the following types of facilities:

  • Chemical manufacturing plants
  • Ethanol plants
  • Grain processing/storage locations
  • Inspection/defect detection areas
  • Loading/unloading areas such as loading docks
  • Manufacturing and warehousing facilities
  • Marine locations such as coastal facilities, oil rigs, and ships and shipyards
  • Mines
  • Outdoor stadiums, arenas, and sports fields
  • Paint/power/blast booth facilities
  • Petrochemical plants
  • Pulp/paper mills
  • Water and wastewater treatment plants
  • Wet/damp areas such as elevator pits, food and beverage processing plants, and wash bays
  • Woodworking shops

Custom Lighting Products at Metal Craft Spinning & Stamping

At Metal Craft Spinning & Stamping, we specialize in manufacturing custom metal components for customers across a wide range of industries. We’ve produced lighting fixtures and lighting reflectors for industrial and commercial lighting systems for over 50 years. This extensive experience, combined with our state-of-the-art metalworking equipment, allows us to deliver solutions for highly specific or unique lighting applications.

Metal Spinning Lighting

While we generally use aluminum for our lighting components due to its light material weight and reflective surface, we can also accommodate brass, copper, stainless steel, and cold-rolled steel. We also offer plating, anodizing, and metalizing services to customize the lighting fixture or reflector to meet the customer’s exact needs.

Engineering Capabilities at Metal Craft Spinning & Stamping

Equipped with several years of industry experience, our engineering experts have the knowledge and skills to help customers bring their lighting concepts to life. Our engineering capabilities include:

  • Design assistance. We provide advice and support throughout the design process to ensure the final product meets your needs. We accept a number of different file formats to make it easy for you to submit your designs.
  • Reverse engineering. If you have a preexisting design or product, we can reverse engineer the design so you can modify or refine it to better suit your current specifications and standards and/or reduce production costs.
  • Value engineering. Upon request, our engineering team can evaluate your existing products and services to determine whether it could and should be optimized to improve functionality and/or production and operating costs.

Custom Industrial and Commercial Lighting Solutions at Metal Craft Spinning & Stamping

If you need custom metal components for your industrial or commercial lighting system, Metal Craft Spinning & Stamping is here to help. Equipped with decades of metalworking experience, we can produce lighting fixtures and reflectors in a wide range of shapes and sizes to suit nearly any lighting system. To learn more about our manufacturing capabilities for lighting systems or discuss your application requirements with one of our experts, contact us today.

Why Use Metal Spinning for Furniture Applications?

Furniture Metal Spinning

Metal furniture and fixtures offer stability and strength, especially for rounded bases and tubular structures. Metal spinning—also known as spin forming or metal turning—is a technique that shapes these parts by taking a flat piece of metal, usually in the form of a disc, and molding it to fit a form as that form and disc spin at high speed. 

These spun-metal products have clean, sleek lines and smooth surfaces that are strong and durable. They are commonly used in many decorative items and commercial and industrial products, ranging from lamp bases to candlesticks to furniture and table legs. Metal spinning is a highly customizable process, allowing both artisans and automated lines to produce accurate forms.

Why the Furniture Industry Uses Metal Spinning

Metal spinning is a perfect match for the furniture industry, as there is little to no waste  (cutting, grinding, etc) when metal is spun into a shape. The process of metal spinning for furniture is relatively swift, if automated, and produces durable items.

You can create almost any rounded shape with metal spinning as long as you find a suitable blank form. The spinning can be done by hand to form unique items or by mass production to create several identical forms of one shape. Either way, the process is very versatile and cost-effective. For the furniture industry in particular, metal spinning produces aesthetically pleasing pieces without breaking a company’s budget. This is essential for furniture manufacturers who want to mass-produce items.

How Metal Spinning Is Used in the Furniture World


Any time you see a rounded base or a tubular structure made of metal, especially steel, copper, brass, alloys, or aluminum, you’re likely looking at a piece that was formed through metal spinning. These include bases for:

  • Lamps
  • Flag Poles
  • Crowd barriers
  • Stools, chairs, and table legs
  • Display stands
  • Lids (e.g., metal trash can lids)

Metal spinning is also used for tubular lamp shapes, candlesticks, vases, and similar items.

Metal spinning using CNC machinery is another matter. This combination of metal spinning and computer-controlled tools produces nearly identical items with specifications that are all within a certain tolerance. This is the path you want to take if your company plans to mass-produce items for sale.

Metal Craft Spinning & Stamping for All Your Metal Spinning Needs

You can form round bases and tube-like forms for furniture and fixtures through a number of methods, but metal spinning offers the best value. It is efficient and allows individuals and companies to create products that are both attractive and practical. 

Metal Craft Spinning & Stamping provides metalworking services in both the U.S. and Canada

Contact Us today to learn more about the metal spinning process or to get started on your next furniture project!


Metal Spun Bases; What You Need to Know

metal-spinning-stoolMetal spinning is a technique for fabricating parts with a circular cross-section from a flat metal disc or cylinder. Metal spinning is also often referred to as spin forming or metal turning. Metal spinning is commonly used in the fabrication of various metallic bases for a wide variety of commercial and industrial goods.

Where Are Metal Spun Bases Used?

Metal spun bases are a natural fit for applications requiring a symmetrical, round component as a base or for finishing. They are widely used in the following applications:

  • Bases for mannequins and display stands in the clothing industry
  • Flag stands, pole bases, or fencing bases for construction projects
  • Bases for chairs, tables, bar stools, and various restaurant furniture
  • Display cases and stands in grocery and retail stores

Aluminum, brass, copper, steel and metallic alloys are all used to make spun bases. Metal spinning with computer numerical controlled (CNC) machines can produce various bases from any of these metals with strict tolerances.

Furniture manufacturing uses metal spun bases for their visual appeal as well as robustness. Steel is usually the metal of choice for furniture manufacturing due to its machinability and strength. Steel parts are also very durable even under fluctuating ambient conditions and high loads. Furthermore, steel parts have an appealing finish that can be maintained for a long time through simple and easy cleaning methods.

Aluminum and brass are used for products that need a high polish—aluminum is used for commercial products while brass is more suitable for decorative purposes. Copper is appropriate for light fixtures and roofing parts due to its high thermal conductivity.

Advantages of Metal Spinning

The main advantages of metal spinning are as follows:

  • Low waste. Spinning generates much less waste than other manufacturing methods and the generated scrap can be easily retained and recycled. This is true for manual spinning as well as precision spinning with CNC machines.
  • Reduced costs. Spinning tools cost a much less than the tools used in other manufacturing processes, giving metal spinning a cost advantage over competitive forming methods.
  • Durability. Spun parts are essentially a single piece with no seams which makes them very sturdy and durable.
  • Speed. The short turnaround time and flexibility of the spinning process makes it an attractive and economical process for volumes ranging from prototyping through high volume production.
  • Versatility. Though the process is simple, it can be used for fabricating a wide variety of shapes. Basic spun shapes such as dishes, domes, flanges, hemispheres, and whole spheres can be combined to make more complicated shapes. A virtually endless variety of products of differing shapes, sizes, and finishes can be fabricated when spinning is used in combination with welding.

Metal Craft Spinning & Stamping has been in the metal spinning business for more than 50 years. We are skilled at hand spinning, as well as spinning with modern CNC machines. We also have in-house hydraulic metal stamping presses, enabling us to meet a broad variety of metal forming needs. Metal Craft can be your one-stop shop for bases, stands, and other metal products.

Contact Us today with information about your  next project.


5 Tips to Optimize Your Metal Spinning Design

Similar to the way a potter fashions a bowl or vase from clay on a spinning pottery wheel, metal can be spun on manual or CNC lathe to produce a variety of parts and components. Metal spinning is an advantage when you need seamless items or particularly strong structural parts. The process is ideal for production volumes ranging from short-lead prototypes to mass production.

With metal spinning, pieces of flat circular metal are carefully shaped into disks that can be further modified to make common items such as:

  • Stainless steel bowls
  • Commercial lighting
  • Brass instruments
  • Gas cylinders
  • HVAC Parts
  • Roofing parts
  • Aerospace parts
  • Satellite dishes

Exact shaping of the metal is dependent on additional tools used with the lathe, such as the complex rollers that smooth the metal form over mandrels. Nearly any type of metal can be used for metal spinning, including brass, copper, aluminum, carbon steel, stainless steel, or titanium. When cold form manipulation doesn’t produce optimal results, heat can be applied to improve the workability of the metal as it is spun.

Best results may be achieved by carefully following the best practices for metal spinning planning and design.

1. Define Object Function

If you don’t know exactly what you’re designing, you’re more likely to waste time and materials during the spinning process. It’s important to note that metal can only be spun on both circular or semi-circular shapes, so the process can, in fact, work for designs that require sharp corners. Once the final goal is determined, a design can be created that will leverage metal spinning’s precision and customizability.

2. Pick Your Material

Metal spinning works with a variety of metals, but selecting the appropriate materials for your specific job will ensure the best results and minimize wasted metal. Different metals can have vastly different end results, depending on the thickness you wish to achieve. 

Very small changes in diameter or thickness can make a part unusable for your engineering project. In addition, some metals are more likely to get rigid as they are spun. Knowing what metal is best for your application and using a material that’s well-suited to your needs will ensure optimal end results.

3. Consider Material Thickness

Depending on the type of metal you use and the height of the sidewalls, the sidewalls of your object will thin and could vary as much as 25%. You’ll need to carefully consider the amount of pressure you apply from the mandrel to the raw metal.

A larger corner radius will be easier to create and stronger than using tighter corners, so you’ll want to avoid sharp corners in your finished part. The formed radius of the end object should be at least 2–3 times the material thickness for best results. The radius in the corners can in some cases equal the metal thickness, but may vary as much as 30%. The thickness of the bottom will be of equal thickness to the original metal blank.

4. Specify Your Tolerances

Metal spun parts don’t necessarily need consistent thickness throughout. Designs should also note that part diameter can be impacted by roundness and flatness. In parts that are less than 1 foot in diameter, a tolerance of +/- 0.005 inches may be achieved. Less than that diameter, you can expect +/- 0.01 inches, while 2–4 feet requires +/- 0.02 inches and 4–8 feet must have a tolerance of +/- 0.03 inches.

Manufacturing your metal-spun part from a tolerance of +/- 0 .01 of an inch for every foot in diameter is an achievable goal.

5. Cost Factors

Many metal forming methods are not cost effective at low volumes, but you can save time and money by metal spinning prototypes or a short runs. A cost/benefit analysis can help you identify savings for your unique design, especially considering different tolerances or sizes. Creating parts is fast with metal spinning so lead times may be shorter, but it’s important to create a design that facilitates fast and accurate production.

Parts created through metal spinning can be made smaller if needed and are often stronger than those created through other processes. Spinning may improve the properties of the raw metal by aligning the grain structures of the metal more advantageously for your application. Depending on the exact use case, metal spinning can be a more cost-effective way to create one-off parts and prototypes than other metal forming methods.

Metal Spinning from Metal Craft S&S

Metal Craft Spinning and Stamping is a fourth-generation, family-owned business that specializes in the production of high-quality parts for our customers across the United States and North America. If you’re ready to bring your metal spinning design to life, please request a quote to get started.

Advantages of CNC Metal Spinning vs. 3D Printing 


cnc-metal-spinningCNC metal spinning and 3D printing are two manufacturing techniques used to create identical custom parts. While the end products can often appear similar, the mechanisms behind the processes and the quality of the end products are vastly different. Before finalizing your next part design or production order, it is important to know and consider the differences between the speed and price of two processes so that your team can choose the right manufacturing method for your application.

Speed & Price

First and foremost, metal spinning outperforms any existing 3D printing methods in both turnover rate and unit cost for both long and short run orders. 

CNC spinning operations can form a product according to the designs faster than 3D printers can build the parts from an existing blank. 3D printed parts have to be run through additional steps before they are ready for distribution. These additional steps include removing supports required during the creation process, washing and polishing the products, and a curing period (to ensure the product is solid and the layers bind together). 

The additional processing required for 3D printed parts increases the turnaround time, making 3D printing less efficient and cost-effective than CNC metal spinning. When speed matters, CNC spinning is the better choice. With this process, operators can also control production time by prioritizing speed over accuracy and vice versa.

CNC metal spinning is also the ideal choice for mass production. 3D printed pieces cost the same per unit, which can offer some advantages for prototyping and small orders. However, it is not suitable for large production runs. CNC spinning, on the other hand, is a process that can quickly scale up for lower per unit prices on larger orders.

Size, Precision, and Purpose

3d-printingCNC metal spinning is a forming process that takes a stock piece of material, or blank, and forms the material to reach the final design. 3D printing, on the other hand, is an additive process that builds the product layer by layer. Although the characteristics of each process make them suitable for particular applications, CNC Metal Spinning offers advantages over 3D printing in regards to size, precision, and purpose.


Industrial and commercial equipment, engines, and machinery are large systems that require proportionally large components. While CNC metal spinning processes can quickly produce large and heavy parts, as an additive process, 3D printing is less suitable for producing large parts as the material layering process takes considerably more time than the material removal process used in CNC spinning. Although 3D printed products can be scaled up from small prototypes, they generally do not exceed the dimensions of a small refrigerator.


CNC machine tools produce smoother edges and surfaces compared to those produced by 3D printing processes, enabling the production of higher quality parts that do not require further processing operations. 


Due to their rougher finish and other limitations, 3D printed components work best as fit and finish parts. On the other hand, the smoothness of CNC spun parts’ surface enables them to be used with precision components and tools.

Contact Metal Craft Spinning & Stamping Today to Receive a Quote

CNC metal spinning outperforms 3D printing when it comes to speed, precision, and smoothness. It is suitable for manufacturing large and heavy components and large production runs. Even with Selective Laser Melting (SLM) 3D printing technology, which allows for the creation of metal products, the results cannot match the accuracy and speed of CNC spinning

Since 1964, Metal Craft Spinning & Stamping has provided CNC metal spinning capabilities for the manufacturing of metal components. 

Request a quote or Contact Us today to get started on your next metal spinning, stamping,


How Venturi Valves Can Optimize Your HVAC Air Flow Performance

Heating, ventilation, and air conditioning (HVAC) systems are essential components of commercial and industrial structures. However, more than just warming or cooling a designated space, HVAC systems are designed to improve air quality and ensure maximum comfort for anyone inside the building.

Variable air volume (VAV) systems or boxes are a common component installed for a commercial or industrial structure and perform a converse operation by supplying variable air flow to different spaces within the building at a constant temperature.

VAV boxes are an important component of any VAV system, as they have strategically placed calibrated dampers that control airflow to specific locations within a building. Although many commercial applications use VAV boxes, these systems often come with their fair share of problems. Some issues with VAV systems include:

  • Time delays between the VAV box airflow sensors and controls, causing frequent adjustments
  • Loss of efficiency  within the structure’s VAV system and HVAC components.
  • Dirty airflow sensors result in efficiency loss, causing routine checking and cleaning 
  • Adjustment delays between system components
  • Airborne risks in critical or hazardous applications

Manufacturing environments, laboratories, and other environments that rely on proper ventilation to safely remove harmful microorganisms or particulates from the air need a more thorough solution

The Venturi valve offers a more responsive solution for these critical applications, and are specifically engineered to facilitate superior regulation of air flow. Instead of relying on signals from the VAV system to adjust to changes in air pressure, Venturi valves measure pressure independently from the system and adjust without waiting for signal exchanges between system components, providing immediate airflow adjustments with ± 5% accuracy. 

Working with Metal Craft Spinning and Stamping

Metal Craft Spinning and Stamping is a leading manufacturer of long-lasting HVAC system components. We know that HVAC systems depend on tough, durable parts for both indoor and outdoor ventilation purposes. Because of this, we use the processes of metal spinning to build these components, In this operation, a spinning lathe forms a blank metal disc into the desired shape for the customers dimensional requirements.

Metal spinning from a certified HVAC provider is more cost-effective than multi-part assemblies.  It is also less time consuming, versatile, and design changes are easily accommodated. Metal spinning an HVAC venturi valve also prevents pressure disruption from damage caused by inclement weather or improper welding of multiple pieces.

Contact Us Today if you’d like to learn how our HVAC fabrication techniques, capabilities, and superior-quality HVAC venturi valves can be your next solution! We use both CNC machines and hand lathes to manufacture products according to customer needs.


Why Metal Spinning Is the Optimal Choice for Your Roof Drains This Season

Metal Spinning Roof Drains vs. Multiple Welded Pieces

Automated metal spinning from a certified metal spinning supplier is indispensable for producing roofing parts such as roof drains, and here are the top reasons why, below:


  1. It is more cost effective than multi-part drains, as the production time is significantly shorter, and there are fewer materials involved with the metal spinning process. It is also more versatile, less time consuming, and design changes are easily
  2. Metal Spinning roof drains also prevents any possibility of leakage from damage caused by inclement weather or improper welding of multiple pieces.
  3. The automated metal spinning process also allows the cylindrical roof drain component to perform in all conditions and bears no welding line, ensuring optimal strength and appearance.

This low-cost process efficiently allows you to create large volumes of cylindrical roofing components with minimal waste, and the innovative design from its tooling allows easy changes to be made to the production process at minimal expense.

Contact us or Request a Quote today to see more about our metal spinning roof drain solutions.

The 411 on Roof Drains at Metal Craft Spinning and Stamping

Over time a flat roof may collect too much water, which will cause flooding.  You can easily prevent this by installing a roof drain. Roof drains are used to convey stormwater from the roof to the retaining area or the drainage sewer. Stormwater is generally received from the roof drains and moved to one of three places:

  1. Your city’s sewer system
  2. A retention pond or reservoir
  3. Left on the ground to naturally evaporate

Automated metal spinning can create roofing drains with a wide range of diameters as well, which is why manufacturers use metal spinning to build roofing products for all shapes, materials, and applications.

Custom Roof Drain Solutions at Metal Craft Spinning & Stamping

Roof drains formed by automated metal spinning can be made of several different types of materials, but aluminum roof drains are by far the most common option.

It is relatively inexpensive but provides solid protection against leakage, and the material allows for inexpensive, high-volume production with shorter turnaround time for your next project, no matter what your required volume.

Metal Craft Spinning & Stamping has been a premier metal spinning supplier for roof drains for commercial and industrial markets to protect your roofing since 1969, and now employs two robots fully dedicated to the automated production of these components.

This allows for quick turnaround times and high-volume orders with virtually zero deficiency kickback. For 50 years, we have offered our clients high-quality products and premier customer service.

Contact us or Request a Quote today to see more about our metal spinning roof drain solutions. Our team experts are happy to assist you!

metal-spinningClick Here to download our free ebook, Metal Spinning: The Optimal Choice for Your Roofing Parts To read more about the benefits of Metal-spinning for your business.

Metal Craft Chosen to Spin 2019 Good Deeds Cup

The Chevrolet Hockey program aims to inspire positive values in young Canadians through hard teamwork and sport and also encourages the participants to perform positive deeds in their communities. The program enables Chevrolet to donate to causes across Canada on behalf of Peewee hockey teams. Players have performed hundreds of good deeds since the 2016/2017 culmination. Good deeds encouraged by the program include voluntary work at food banks, visiting an animal shelter, or driveway shoveling in the community.

However, the activities involved are limitless, as players are free to come up with and implement any suggestions. Good Deeds Champions receive different prizes, including the coveted Chevrolet Good Deeds Cup with the team’s name engraved. But how exactly is such a celebrated championship cup designed and made?

The Good Deeds Cup Design


Hockey Canada approached Jimmy Rogers of 39 Design and Engineering Inc. to design the Chevrolet Good Deeds Cup. He then contacted Metal Craft Spinning and Stamping to spin the cup portion of the trophy itself. This unique project allowed us to showcase our manual metal spinning capabilities while supporting a worthwhile charitable program.

The client asked us to fabricate the Good Deeds Cup from brass. This metal comes as a flat sheet with excellent formability properties, allowing for a smooth transformation into a cup. While brass is already a ductile metal, for this project we put it through several annealing cycles to make it more malleable. The annealing process involves treating the metal with heat to increase its ductility, but multiple rounds of annealing were necessary as brass heats up rapidly and gets hard quickly.

metal-spinningTo create a high-end, long-lasting cup, we turned to our senior metal spinner, whose 30 years of hand spinning experience was the perfect match for the project. Our senior metal spinner has handled a wide range of complex pieces over the years, which means he could handle any issues that may arise to produce an exquisite masterpiece.

Since the end product was only one piece, the operator chose a hand spinning lathe instead of a CNC machine. Aside from the low volume, a hand spinning lathe is also ideal when you need maximum control. Manually spinning the piece allowed our senior metal spinner to feel the flow of the material.

Crafting this sophisticated piece required significant preparation and time. The spinner took five hours to produce the Good Deeds Cup. It was then polished and shipped to our client.

About Manual Metal Spinning

A typical hand metal forming process takes the following steps:

  1. The operator mounts the mandrel chuck to the headstock. He then fixes the blank in position by advancing the follower block attached to the tail’s headstock.
  2. A combination of a tool rest and pin serve as a support system for the lever arms. This arrangement gives the lever arms enough leverage to apply sufficient pressure to the blank against a forming tool like a roller.
  3. A pass in manual metal spinning refers to one movement of the roller across the blank’s surface. The operator needs to run multiple passes to form one complete part. This can be achieved by increasing the pressure on the blank using the lever arms gradually to reduce the blank into the desired form.

For mass production and repeatable precision in large volume metal forming, Metal Craft Spinning & Stamping uses our CNC metal spinning machine rather than a hand lathe. This technology automates the passes, transforming the blank disc into intricate pieces within minutes.


Metal Craft Spinning & Stamping is a fourth-generation family business founded in 1969. We have earned a reputation for prompt delivery and quality service that surpasses customer expectations.

Our industry-leading metal spinning experts use advanced CNC machines, and hydraulic presses among other state-of-the-art equipment to meet the needs of hundreds of customers across North America that rely on us for thousands of quality parts. The shapes we produce are endless, including caps, balls, cones, bowls, lids, ferrules, and many more.

Contact us to put our 50 years of experience to work on your metal spinning or stamping project.