Slight z axis wobble

[boxeddroid]

I have this slight wobble in my core as shown here.

easyupload.io

I’ve taken the core apart several times I’ve even reprinted the core cause I had a slight layer shift while printing. No matter what I do I cant get that wobble out of the core. I’m getting lines while I cut on certain sides. If I’m watching what is happening I see the dewalt shift a little and I’m sure it’s due to this wobble.

Any ideas what is wrong? The 2 clamp bolts holding the core are tight while the tension bolts are fairly loose cause the machine is pretty square naturally, now. I’ve tightened the tension bolts and that didn’t help. I’ve taken the core apart and reassembled a couple times already with no improvement.

[thisriley3 (Mike)]

What parts do I need to reprint?

Hey guys, I’ve had an issue with my core becoming loose over time… You can see what I mean in the below videos. I’ve had a couple of mistakes where the CNC ended up skipping steps on the x and y gantry’s and I’m wondering if that sort of stress on the machine would cause the core to become loose. That question aside I’d like some advice o how to fix it. Do I need to reprint the 4 clamps that hold the core to the crossbars or does the core need to be reprinted as well? …

The solution here worked for me with a similar problem.