In chapter 5 lesson 10, Jake breaks down everything you need to know about dimple forming, how to use it to make your parts stronger, lighter, and better looking. You’ll learn what dimples (or “speed holes”) actually do, how the forming process works using upper and lower dies, and what design rules you need to follow to make sure your parts come out perfect.

Jake walks through the three key design dimensions, the dimple tool outer diameter, the dimple major diameter, and the dimple hole size, and explains how these affect spacing, edge distance, and bend clearance. You’ll also learn the minimum distances required between dimples, bends, and part edges to avoid deformation or tooling collisions.

Finally, Jake shows how to design dimples correctly in CAD, check spacing visually, and import your flat DXF into SendCutSend to configure your dimples for production. By the end, you’ll know how to design dimples that add stiffness and style without adding weight, and how to make sure your design passes DFM checks the first time.

What You’ll Learn:

• What dimple forming is and why it’s used to make parts stronger, lighter, and more rigid
• How the dimple forming process works using male and female dies
• The three key design measurements: tool outer diameter, dimple major diameter, and dimple hole size
• How to calculate and follow minimum spacing requirements between dimples, bends, and part edges
• Common design issues like deformation, bowing, and cupping, and how to avoid them
• How to set up and verify dimples in CAD before exporting your DXF
• How to configure dimples in SendCutSend’s checkout to ensure proper sizing and direction

Additional resources:

Dimple Guidelines
The Ultimate Guide to Dimples Dies