Square corners come out round

General discussion of laser machines

Re: Square corners come out round

Postby macona » Wed Mar 21, 2012 7:38 am

Try increasing your lookahead.
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Re: Square corners come out round

Postby edmond22 » Wed Mar 21, 2012 6:38 pm

lookahead is set at 200 lines
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Re: Square corners come out round

Postby MBF » Thu Mar 22, 2012 11:14 am

Lookahead is fine, I think you have some backlash did you tjek for that. and is your gantry square

/Mike
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Re: Square corners come out round

Postby edmond22 » Thu Mar 22, 2012 6:22 pm

Gantry is nice and square now that the machine is running the makerslide system, but I think you are right about the backlash, I will check all the belts and pulleys tomorrow evening and do another test run.
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Re: Square corners come out round

Postby mondo50m » Thu Mar 22, 2012 6:46 pm

I have a homebuilt CNC router that I built a couple of years ago. I have experienced the square corners being rounded on several occasions. This made it necessary for me to make new nuts for the screws. Mine are HDPE and wear out after about 8 months of use. I would check the backlash also. It solves it for me. I identify the problem by the corners being rounded in the opposite corners and square on the other two.

Milt
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