teotwaki

@teotwaki@lemmy.world

• ⁨Comment⁩ on ⁨The Prusa Mk4 has done it again ☹️⁩ ⁨⁨1⁩ ⁨week⁩ ago⁩:

  Not sure what you need to get approved. Buying a roll of ASA? It’s part of printer maintenance, and making it more reliable in the long run.

  And if you don’t have ABS/ASA on hand… why is the printer in an enclosure?

• ⁨Comment⁩ on ⁨The Prusa Mk4 has done it again ☹️⁩ ⁨⁨1⁩ ⁨week⁩ ago⁩:

  It’s the PETG. Specifically, it is the softening on the following parts:

  • y-belt-holder-R2
  • y-belt-holder-tensioner-R2
  • x-end-motor-R2
  • x-end-idler-R2

  I would recommend the following Y-axis mod for the MK4. I am still running this even on the MK4S, even though the Y-axis was modified on the MK4S.

• ⁨Comment⁩ on ⁨The magnetic printing plate shifted early in the print - or something else happened?⁩ ⁨⁨1⁩ ⁨week⁩ ago⁩:

  My money is on the PETG starting to loosen and you losing tension on the belts.

  You have the MK4 in an enclosure–I did too. At some point I stopped being able to print flexibles, but ASA/PCCF was still fine. Prusa support told me that the idler was getting loose and my hotend was losing grip on the fillament.

  I had another print where there was a nearly 2-3cm shift in the layers between layer 5 and layer 80. Some of my belts had absolutely lost the plot. I reprinted everything in ASA or PCCF, and while upgrading to the MK4S rebuilt the printer with all ASA/PCCF parts. No problems since.