In chapter 5 lesson 11, you’ll learn how to design and prepare tapped holes, cut or formed internal threads that allow bolts or screws to fasten directly into your parts. Jake explains the difference between cut vs. formed threads, imperial vs. metric thread types, and how to choose the right thread pitch for your design.

You’ll also learn about thread engagement, why material thickness matters for reliable threads, and how SendCutSend automatically sizes and taps your holes during production. The lesson walks through setting up tapped holes in CAD, understanding UNC/UNF and metric designations, and knowing when tapping is the best choice versus using installed hardware.

By the end, you’ll know how to confidently design and order parts with properly threaded holes, ready to assemble right out of the box.

What You’ll Learn:

• How tapping creates internal threads for bolts and screws
• The difference between cut and formed threads
• When to use UNC, UNF, or metric thread types
• How thread pitch and thread engagement affect strength
• Why material thickness determines if tapping is possible
• How SendCutSend automatically resizes and taps your holes
• How to set up and configure tapped holes correctly in CAD
• When to choose tapping versus hardware installation

Additional resources:

Tapping Guidelines
Guide to Designing for Tapping
How to Measure Thread Size