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If you want the tool to touch your waste board then you just set the took height .1 mm higher with the G92 command.Example: if G92 Z6.6 sets your tool at .1mm above your waste board then G92 Z6.7 will set it so the tool touches the table. I however enjoy the small bit of space and if I want to cut deeper I just tell the code to cut .1mm deeper.Hope that helps.
Very Good, I appreciate the great instructable!
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