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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, or hydroforming project,


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, hydroforming 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.

Metal Spinning, Metal Stamping, HydroformingClick here or on the ebook to read more about all our capabilities and how we can help with your metal forming needs!








Bringing Metal Spinning to The Modern Age

Metal spinning has evolved significantly over the years. Though the concept remains the same, modern equipment and advanced technology have transformed the process into a more viable and affordable option for the manufacturing industry.


What Is Metal Spinning?

is known by many names, such as spin forming, spinning, and metal turning. Regardless of the name used, it is a metal forming process which rotates a tube or disc of metal at a high rate of speed to produce hollow objects or components. A common factor in these hollow objects is their typically circular cross section. 

The best uses of metal spinning include creating prototypes and manufacturing parts which require high internal and external pressures. 

Traditional Metal Spinning Process

The basic concepts of the metal spinning process have not changed a great deal since spinning was first introduced as a manufacturing tool. The essential steps include: 

  • Mounting a mandrel chuck on the headstock of the lathe.
  • Mounting a follower block to the tailstock.
  • Clamping of a circular blank by advancing the follower.
  • Pressure is applied to the blank via a roller or other forming tool on the lever arms, using the tool rest and pin to provide scissor-like support and leverage to the lever arms.
  • The roller moves across the blank in a series of passes until it forms the completed part.

Modernization of Metal Spinning

metal spinning automation Manual metal spinning, which came to North America in the early 1800s, has evolved into a more modern process. The technological advances of our modern age have combined to automate the process, making it faster and improving repeatability. As such, automation has made metal spinning an even more reliable and cost-effective manufacturing option. 

Automated metal spinning makes use of computer numerical control (CNC) in place of hand spinning. CNC is a method of subtractive manufacturing technology, which follows a computer aided design (CAD) model along with a variety of cutting tools to remove material from a blank in order to produce the desired component. The major advantages of CNC spinning over hand spinning include: 

  • Higher level of accuracy and consistency over an entire production run
  • The mitigation of human error risks through the autonomy of CNC machining and reduced touches.
  • The necessity of fewer personnel for high capacity production runs
  • 24/7 operation using machines, which cuts back on manpower and operating costs. 

Besides these advantages, CNC metal spinning allows for the turning of a broader range of materials than hand spinning, including less malleable materials. The materials formed using CNC spinning include: 

metal spinning automationThis broad range of metals allows for a wider variety of manufacturing options and broadens the range of potential industrial applications which the process might serve. With CNC providing a more cost-effective option for producing parts, along with greater accuracy and consistency, it makes good business sense to incorporate it into your fabrication process when relevant to your design. 

Metal Craft specializes in the manufacturing of metal components of all shapes and sizes utilizing the metal spinning process. Contact our engineering department today to see how we can assist you in completing your project with metal spinning.

Spinning, Stamping, and Hydroforming: Which Works Best for Your Application?

Most manufacturers consider metal spinning, metal stamping, and hydroforming to be specialized and narrowly focused processes, but actually, these metal-forming methods are used in industries as varied as commercial construction, interior design, heating and climate control, and agriculture. Manufacturers use spinning, stamping, and hydroforming methods for products ranging from satellite dishes to funeral urns.

Understanding the benefits of each process as well as where they overlap will help you decide which metal forming technique best suits your application. Below, we’ve assembled an overview of the three main metal forming practices, and we also outline the ways they could benefit your production line.


Metal Spinning

Metal spinning produces hollow parts in typically circular cross sections. This low-cost process efficiently allows you to create large volumes of cylindrical objects with minimal waste, and its tooling’s innovative design allows you to make changes to the production process at minimal expense.

Metal spinning can create objects with diameters ranging from one inch to eight feet. Manufacturers use metal spinning to build products including roofing, lighting, stainless steel bowls, engine components, musical instruments, brass vases, and satellite dishes.

Metal Stamping

Metal stamping uses precast dies to form flat metal sheets into different shapes. Because metal stamping requires less machine use and fewer laborers, it incurs fewer production expenses than other techniques.

Well-designed metal presses can punch, bend, notch, and emboss sheet materials as needed. Parts formed via metal stamping often appear in farm equipment, brackets, caps, and ventilation systems as well as many other industries.


Hydroforming uses oil pressure to shape cold-forming metals such as aluminum and stainless steel into durable, yet lightweight, pieces. The seamlessly bonded end products feature a high stiffness-to-weight ratio, so they meet the required tightness tolerances. 

This cost-effective method creates components via single-stage production, which also makes it easier to process large amounts of material at a time. Metal formers use hydroforming to build lighting fixtures, satellite antennae, and a wide range of automobile parts.

Which Method Best Fits Your Application?

Each metal forming technique offers unique benefits and drawbacks depending on its application. Manufacturers must also take their desired volume sizes into account when selecting a metal forming method. 

  • Metal spinning works best for prototyping and parts with high internal and external pressure
  • Metal stamping quickly fills both low- and high-volume orders and precisely cuts complex shapes
  • Hydroforming produces large, complex parts that require original finish maintenance, and can yield annual volume runs both large and small

Can’t Decide?  We Can Help

At Metal Craft, we manufacture metal components of almost any shape or size, offering a full spectrum of metal spinning, metal stamping, and hydroforming services. As fourth-generation metal forming specialists, we’re proud of our long-term business relationships with our valued customers. 

Contact us and let’s get started! Our highly trained experts will work with you to design and fill your next order, and we’re committed to exceeding your expectations. 


Leaders in Metal Spinning & Stamping

For over 40 years, Metal Craft has been a leader in the metal industry. Through constant dedication, we’ve honed our skills and accumulated the expertise to provide our customers with the high-quality service they expect.

We can make both ornamental and functional parts. From urns and spear tops for flag poles, to roofing and vacuum components. We work with aluminum, brass, copper, steel and stainless steel. We also offer wood and steel tooling, as well as a variety of value added services. We can spin, stamp and hydroform parts up to 48 inches in diameter in a broad range of thicknesses. All of this is to ensure that we can provide exactly what our customers are looking for.

Our expertise allows us to apply these resources in the best way possible. Working with Metal Craft in the design stage enables you to take advantage of our years of experience in achieving the final result. The possibilities truly are endless.

So whether you need a big part, small part, low volume, high volume or you’d like to introduce a new product line, look no further—Metal Craft will be the right shop for you.