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Comment on Prusa Mk4 or Mk4s first layer issues

this exact issue

Yours looks nothing like the ones on github. Did you try looking at the printer while it’s failing, can you tell if the filament is not extruding or not sticking?

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snrkl@lemmy.sdf.org ⁨1⁩ ⁨week⁩ ago
Thanks…It’s a good point. Ive updated the post photo, a d I’ll add the worse failure mode elsewhere.

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- riodoro1@lemmy.world ⁨1⁩ ⁨week⁩ ago
  On the new photo it’s obviously too close to the bed but consistently so. Looks like the defaults picked by prusa might not be the best. Try what they posted on github, manually change the Z offset in start g-code. Looks like (hopefully temporarily) you’re back to manually tweaking your Z height like a plebeian.
  
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snrkl@lemmy.sdf.org ⁨1⁩ ⁨week⁩ ago
A typical output with PLA.with Zoffset = 0

Image

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snrkl@lemmy.sdf.org ⁨1⁩ ⁨week⁩ ago
This is one of the worse failure modes I have experienced for this issue. In this instance, the extreme amount of “squish” leads to extreme filament buildup on the nozzle, eventually causing clisions and removing chunks of the FL test.

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