Frequently Asked Questions About Metal Spinning or Spin Forming

Here are some answers to the most common questions about metal spinning or spin forming. If you have a specific question and don't see the answer here, please contact us and we'll be happy to provide you with an answer!

What are the advantages to metal spinning?

Metal spinning lead-times are usually shorter and tooling costs significantly less than with other metal forming processes such as stamping. Lower volume runs can be economically produced with metal spinning. Reverse angles and reveals are possible with metal spinning. The many design alternatives and cost advantages make metal spinning an attractive process to consider for your next project.

What shapes can be formed with metal spinning or spin forming?

  • Hemispheres
  • Venturis
  • Flanged covers
  • Cones
  • Dished heads
  • Funnels
  • Stepped parts
  • Parabolas

These are just a few of the shapes that are possible with metal spinning. As a general rule, spun parts are symetrical in shape. In certain cases parts can have reveals or return angles. Please consult us for specific details.

What diameter blanks can you spin?


48" dia to .312 thick
60" dia to .190 thick

Mild Steel

48" dia to .250 thick
60" dia to .090 thick


48" dia to .250 thick
60" dia to .125 thick


48" dia to .187 thick
60" dia to .075 thick

For certain special applications we can spin or swing up to 84" diameter blanks.

What job quantities are candidates for spinning?

Short, medium and long running jobs are all candidates for spinning. Some jobs actually combine spinning and other processes to obtain the desired part. Spindustries can offer design suggestions and recommend ideas for the appropriate process.

What are metal spinning tolerances?

Typically +/- 1/32" (0.0313"). Each job must be evaluated on its own merits and special circumstances. Keep in mind that due to the nature of the process, tolerances normally are ID.

What are lead-times for jobs involving new tooling?

From 4 to 5 weeks is normal. Simple requirements can sometimes be produced more quickly and complex requirements can take longer.

What are lead-times for jobs with existing tooling?

Normal lead-times with existing tooling on-hand at Spindustries is usually 3 to 4 weeks.

Have more questions about metal spinning or spin forming?

Contact us for answers to your specific metal spinning questions