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General Mach Discussion / Re: More Z-axis difficulties...
« on: October 22, 2012, 02:02:23 AM »
OK, so i set my z velocity and acceleration to 50% the original value and it looks as tho that may have prevented the sudden and random plunge into the material. But now it has a gradual and steady plunge through out the entire cut. I generaly only cut very small items usually between 3"x3" and 6"x6" but have started to broaden my horizens a bit and have moved up to larger cuts. The project im working on now is still only 24x24 but I have it tiled to 12x12 pieces. The design is a 2.5d decorative piece that starts out cutting .01" below the surface as to not leave any flat spots with a max plunge of .2". By the time i get to the end of the first 12x12 tile my max plunge is still .2" but my z zero went from .01" to .04". When i tell the machine to return to zero mach tells me im at zero but the tip of the bit is .04" deeper than whats its suppose to be. The x and y are spot on and I never have any issues with them. I did forget to mention that a while back my stepper driver went a little weird on me and out of nowhere my z started getting very twitchy and would make funny noises when jogging. I slaved the A to the Z and have been running it that way for the past few months without problems until now when i started doing larger cuts. Thanks Rich for the advice earlier! Im hoping you might have a few more tricks up your sleeve for me!