Very nice simple implementation. What Feedrate do you use when probing the tool? I would imagine that with this system, the slower you run it down the more accurate it will be.
A little spring loaded system like they use on the big machines would be nice to keep from breaking bits in case they touched down a bit hard, but you're not making this for Joe Schmo, you made it to make your life easier. You know, the more I look at this system, I am in love with it's simplicity.
Great job on a very useful tool!
My name is Electric Nachos. Sorry to impose, but I am the ocean.
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(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)