this post was submitted on 20 Jun 2023
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I have a bltouch clone which work fine on glass bed. After switching to textured PEI sheet, it's variance trippled to 0.1mm, which make my bed mesh all wobbly.

I'm I suppose to remove the steel plate when making the bed mesh? Do you home Z with a probe with this setup?

The weirdest thing is, despite all this all my prints adhere completely fine. I guess PEI is just that good.

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[–] x7tYnC6c 1 points 1 year ago (1 children)

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.

[–] fhein 1 points 1 year ago (1 children)

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)

[–] x7tYnC6c 1 points 1 year ago

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.