A Tool Height Setter is used to measure the height of your tools so you can fill in the tool table on the CNC to adjust for that height. Some use electronic touch sensors, and some use an indicator like this one.
Check out the link. Here are some sample pix from the article:
First, use a Wire EDM to cut all the parts out. EDM is slow, but can do things that just can’t be done any other way…
For example, how about wire cutting a circular touch pad out of a brazed carbide tool so your endmills would nick the tool pad?
Bearing base provides three points of contact so the tool setter sits flat on the machine table and is less prone to cocking if there is a chip there…
The finished Tool Setter is a gorgeous piece of shopmade tooling…
Lots more pictures of the build over on PM!
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Bob is responsible for the development and implementation of the popular G-Wizard CNC Software. Bob is also the founder of CNCCookbook, the largest CNC-related blog on the Internet.