Metalforming Tips Blog

What’s the Right Height for Your Metalforming Part? [Free Chart]

When metalforming, the height of the form is critical. If it’s not correct the first time, it can be a costly mistake to fix. Below you’ll find a quick-reference guide on how to achieve the proper height.

diagram showing the height of the form

Diagram “A” illustrates a 90 degree bend with insufficient height (H) to form properly. Consequently, stock must be added so the form is high enough (H), stock is then cut-off, which means additional tooling and an additional operation.

If (H) is not high enough, the cut-off tool may not have sufficient strength to stand up for a particular material or thickness. This may result in a higher cost secondary operation such as milling.

Illustration “B” indicates how to determine the minimum inside height (H), which in this case equals 2-1/2 times the material thickness (T) plus the required bend radius (R).

Minimum Inside Height of the Form

The concept illustrated by “B” above is converted to chart form below for convenience. These recommended minimum formed height dimensions are general to cover most variables of design, size material types, tempers and thicknesses. Properly designed small parts and easily formed materials, such as aluminum, brass, copper, and mild steel may be formed with a slightly lower minimum inside formed height (roughly 20% less).

a chart showing various measurements for height of the form - visitors using screen readers can contact us for an accessible version of this chart

Want more metalforming and metal fabrication tips? Get your FREE copy of the original Dayton Rogers Red Book. This powerful book is your resource for all things metalforming and stamping.

Request the Red Book Banner

Download the Red Book


Dayton Rogers is your trusted resource for sheet metal fabrication, metal stamps, metalforming and all your manufacturing company needs. Get a free quote today on your custom metal fabrication project.

LOCATIONS

  • MINNEAPOLIS 8401 West 35W Service Drive Minneapolis, MN 55449
  • OHIO 2309 McGaw Road West Columbus, OH 43207
  • SOUTH CAROLINA 1020 Second Avenue Columbia, SC 29209
  • TEXAS 1107 Commercial Blvd N Arlington, TX 76001