3DPrinting
3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.
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If you press down on the PEI/steel sheet manually, does it look like it's flexing or does it feel stable? When you switched from glass to steel+PEI, did you put an adhesive magnet sheet on the print carriage, or are you using some other method to hold the print surface in place? Just found a post on reddit where someone discovered that their build plate only sticks to the magnetic sheet when they rotate the plate 90 degrees, so perhaps that's worth a try.
Nah it rock solid. The variance come from the texture itself.
Not doubting you, but I can't think of a logical reason for why it would be like that. The probe pin shouldn't push down hard enough to be able to deform the PEI
Perhaps as a workaround you could configure the firmware to probe each spot 3 times and average the result, if you don't mind the extra time levelling would take?
I meant the probe is deflected by the texture. Taking multiple sample is what I'm doing, yes. It take at least 5 samples for it to be reasonably smooth, which is why I'm asking other experience.
You mean you think the probe slides off the bumps in the texture? I think the probe should be stiff and light enough to not do that, but perhaps you could've been unlucky if it's a clone not from a well known brand (e.g. Trianglelabs.. even Creality's probe's are supposed to be quite good afaik)
Yes. I'm certain it is a build quality problem. The probe is just plastic and by design hang freely. Even a steel rod with bearing can easily be deflected by a few tens of micron.