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Prusament PETG on Textured Sheet  

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Mat
 Mat
(@mat-5)
Active Member
Prusament PETG on Textured Sheet

Was excited to take delivery of 2 rolls of Prusament PETG and the Prusa Textured Sheet. Looks like the MK3S control panel was printed with Prusament Orange on the textured sheet, so it can be done of course right?

Here's my "out of the box" parameters:

  • no adhesion coatings applied to the surface
  • default PETG profile in Prusa Slicer (interestingly, the data sheet says extrusion multiplier should be 1.07, but the Prusament PETG profile in Prusa Slicer has it set to 1.0)
  • first layer calibration done for the textured sheet, as best as could be done

Basically there is ZERO adhesion using Prusament PETG on the Textured Sheet. The filament just slides around, until you smoosh the Z layer down to about -1.35 then it crushes so much that it blobs up back onto the extruder nozzle.

There is NO sweet spot in the middle!

How on earth do you print PETG to the textured sheet?!

(FYI it seems to stick well to the smooth sheet, then it tends to pull the surface off the sheet when removing prints!)

I don't understand how it can be so difficult! I have spent all day trying to print with this PETG, the only success I've had is with the smooth sheet, even then it threatens to ruin my smooth sheet!

This topic was modified 4 years ago by Mat
Posted : 18/05/2020 12:44 am
bobstro
(@bobstro)
Illustrious Member
RE: Prusament PETG on Textured Sheet

If you're ok with varying from Prusa's recommendation of only using isopropyl alcohol for cleaning, many find a wash under the kitchen sink with Dawn, Fairy or similar dish soap does wonders for removing manufacturing redidues. Scrub it with a plain paper towel and dry it with another. Do nothing else to the sheet and redo Live-Z using https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-assembly-and-first-prints-troubleshooting/life-adjust-z-my-way/&ved=2ahUKEwjaxq7ixrzpAhUPoHIEHV-pA8EQFjAAegQIBBAB&usg=AOvVaw1vUTD6aZTq5HLPdJgu0a7 A" target="true">Jeff Jordan's "Life Adjust" procedure. 

This may be all you need. Unfortunately, the textured sheets vary a good bit in terms of adhesion, though it's usually PLA that is problematic.

My notes and disclaimers on 3D printing

and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

Posted : 18/05/2020 4:18 am
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