Drafter Toolbox
HomeResourcesCNC Design Guide

Design guide

CNC design guide

How to design parts a machinist can actually cut: where a tool can reach, what an internal corner costs you, how thin a wall can go, and which tolerances are worth paying for.

What is in it

  • Tool access and reach, and the geometry that quietly commits you to a special cutter or a second setup
  • Internal radii and wall thickness, the two features that decide how a part is cut before anything else does
  • Which tolerances are worth paying for, and which ones you are buying by accident

Downloading takes a free Drafter account. One account gets you every guide and chart in the toolbox, plus the monthly newsletter, which you can leave from any issue in one click.

Cover of Drafter's CNC Guide: machined flanges and brackets beside a line drawing of a spindle cutting into a brain, captioned toolpaths for your thoughts.

The whole guide is in the PDF. We are laying these out to read properly in the browser, the way the reference charts already do; until that lands, the file is the guide.