So I have an issue.
I bought another 3XL (other one is from 2017 and runs CM V3, works perfect, .9 GRBL) and this one runs V4…
I can’t get it to stay in the Z limits, if I’m cutting a pocket (vcarve pro softare) and say that pocket is 18mm deep, i’ll do 6, 3mm passes. When its cutting the pass thats 15mm deep, at the end of the pass when it does its last pass/clean up (as it does each pass) it wont lift up at all. it just makes the dreaded clunking sound. and then forces the bit through the wood running the file as though it did lift etc. Noise, wasted wood, time etc. I’m worried its going to self destruct!
I have both CNC’s set up exactly the same, use the same files, have 2 PC’s that are exactly the same etc.
why does this happen with the new one. I have done all the usual things, sanded the rails to make sure they are smooth, the wheels are round, I’ve tried 3 different belts, changed springs (that shouldn’t matter as its not retracting, thats the issue)
Basically, the Z axis just decides to no longer retract have way through the cut… The only difference to me is the software, its homes perfectly, cuts the first half of the file perfect, seems to be within the Z limits?
Only thing I can find is the limit I see everywhere is $132=80 and on V4 is preset to $132=100 and from what i can tell, I’m unable to change it. could that be the problem?
I’m totally at a loss and having this working for my Christmas rush is the reason i bought another…
I’m by far an expert at running a CNC, but have at least 1200 hours on my old one, use vcarve pro etc. Any advice would be greatly appreciated.
Thanks and Happy Holidays