Cut out depth on Shapeoko xxl

I’m having an issue with getting my machine to cutout a sign. I don’t know if it’s belt slippage or if something is off. I’m at .05 of an inch thicker than my material and it’s barely cutting into my wasteboard. Any suggestions or thoughts on what’s wrong? Also, I’m using a 46202K amana downcut bit.

hi @wflancaster
you’d have to give us more details so we can help you.
How did you proceed, to set the zero point of the stock, and in terms of software… wouldn’t you be mistaken about the point of origin of the part?

I set the zero by jogging the tool down until it pinched a peice of paper onto the stock. I measured my stock with a set of dial calipers and went .01 over it like I had heard to do. I have also had the same problem with using the bitzero though.

and on cc? where did you put the stock thickness? and the stock thickness is good?

is this the first time you’ve had this problem?

I’ve struggled with a cut out since I started using the machine.

One thing you can do is jog manually to the top of your stock AFTER the cut, and see if that still corresponds to Z=0.0
Assuming your zeroed correctly initially, if the Z value of the top surface after the job is not 0 anymore, this probably means you lost some Z steps during the cut, which would explain why you are not cutting all the way through.
What were your feeds and speeds and material ?

I’ve never had a problem. If the machine doesn’t do what you want it to do, it’s because there’s an error somewhere… either in the software or in setting the wick or the stock…
you have to be methodical and check everything… don’t sort through the steps.
Every time I’m in a hurry, or with my head out of the way, I make mistakes… it happens to everyone.
Check everything before you start. Especially in the beginning, when you don’t master the software or the machine.

18000 RPM spindle, 60 feed, 30 plunge, material is pine and I have a ramp of 3 inches.

That sounds ok.
I suggest you do that test (checking Z value of the top surface after the cut), and then we’ll know if something on Z is skipping/slipping. Speaking of, another possible culprit is the Z axis pulley set screws, triple-check that one of them is against the motor shaft’s flat, and that both are fastened.
If you do that rerun to check Z, you should draw a line across the motor shaft and pulley before:


and check whether they are still aligned afterwards.


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