sorry, i can't help you
It's Ytong, ran out of mdf and have to go downtown for it.What is that you're cutting, Richard? Foam? Where did you set your XY zero on the work piece (how did you locate that point)? It looks like the actual size of the pocket is correct, though.
Thanks! :dance3::moil:Welcome to the forum
Have you checked your drives for backlash, loose couplings, etc.? Although, with the pocket sizes being accurate I doubt this is the issue.It's Ytong, ran out of mdf and have to go downtown for it.
Dust is nasty and all over. :bad:
I set my X0Y0 on ytong bottom left corner. Yeah, size of the pocket is 99.9% correct.
I think this is because i updated grbl to v1.1h and flashed back to stock version (0.9j.20180122).
Honestly? I have no idea what i was doing. :nerd:
$$ < $0=10 (step pulse, usec)
$1=25 (step idle delay, msec)
$2=0 (step port invert mask:00000000)
$3=0 (dir port invert mask:00000000)
$4=0 (step enable invert, bool)
$5=0 (limit pins invert, bool)
$6=0 (probe pin invert, bool)
$10=3 (status report mask:00000011)
$11=0.010 (junction deviation, mm)
$12=0.002 (arc tolerance, mm)
$13=0 (report inches, bool)
$20=0 (soft limits, bool)
$21=0 (hard limits, bool)
$22=1 (homing cycle, bool)
$23=0 (homing dir invert mask:00000000)
$24=25.000 (homing feed, mm/min)
$25=500.000 (homing seek, mm/min)
$26=250 (homing debounce, msec)
$27=1.000 (homing pull-off, mm)
$100=400.000 (x, step/mm)
$101=400.000 (y, step/mm)
$102=400.000 (z, step/mm)
$110=1500.000 (x max rate, mm/min)
$111=1500.000 (y max rate, mm/min)
$112=1500.000 (z max rate, mm/min)
$120=10.000 (x accel, mm/sec^2)
$121=10.000 (y accel, mm/sec^2)
$122=10.000 (z accel, mm/sec^2)
$130=200.000 (x max travel, mm)
$131=200.000 (y max travel, mm)
$132=200.000 (z max travel, mm)
Hey Mike, I did zero on the corner of my work piece. I never use home and default setting is off.Pockets look good but that is just 10mm so might be slightly off.
Where is the CNC homed to, Did you zero on the corner of the foam or did you home the machine and then run the toolpath, that may be where the difference in start point comes in.
You could also set a point at your start point in your design file to make a shallow plunge at that home point, then start in a good solid part of your material, run the file and see if the measurements from the center of the plunge to your pocket is correct or still off. That way you are not depending on trying to zero on a less than desirable spot like the corner of the sponge.
Also if you are trying to calibrate your machine you will want to use the longest cuts possible so you have greater accuracy.
Hey David, i checked them and they're good to go.Have you checked your drives for backlash, loose couplings, etc.? Although, with the pocket sizes being accurate I doubt this is the issue.
If you home your machine to the XY zero you set and issue a manual command to move 1" or 5" (any distance, really), for instance, does it move that prescribed distance on both axes?