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General Mach Discussion / Re: z zero plate problem
« on: February 09, 2018, 09:18:59 PM »
Hi,
all touch off routines rely on a G31 probing move.
The general form is:
G31 Z -1 F10
So the machine will drive to Z=-1 inch at 10 inches per minute. There's a couple of things that an go wrong and may explain what you've described.
The first is that the tool needs to be above the surface by a small amount, I can't remember what the number is but I always make sure that the tool is at
least 1/16 inch above the surface. The second problem is what happens if the surface is already at -1.2 inch. Even if the tool is just above the surface as I
recommended above it would still start out lower than it was supposed to finish the move! Believe it, I've done it myself and wondered what the hell was going on!
Double check these two items and let us know how you got on.
Craig
all touch off routines rely on a G31 probing move.
The general form is:
G31 Z -1 F10
So the machine will drive to Z=-1 inch at 10 inches per minute. There's a couple of things that an go wrong and may explain what you've described.
The first is that the tool needs to be above the surface by a small amount, I can't remember what the number is but I always make sure that the tool is at
least 1/16 inch above the surface. The second problem is what happens if the surface is already at -1.2 inch. Even if the tool is just above the surface as I
recommended above it would still start out lower than it was supposed to finish the move! Believe it, I've done it myself and wondered what the hell was going on!
Double check these two items and let us know how you got on.
Craig