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MK4 -> MK4s upgrade, now nothing but problems  

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Slacker
(@slacker)
Active Member
MK4 -> MK4s upgrade, now nothing but problems

MK4 kit built myself. Probably had 5 failed prints in the 8+ months I have had it printing almost exclusively PETG. Did the 4->4s upgrade and now I get layer shifts, blobs, continued extrusion after cancelling a print (the gears are still pushing filament into the extruder), and just generally an unusable printer. I have recalibrated everything multiple times. Uninstalled, deleted the folders and reinstalled PrusaSlicer. When I cancel the print I bring up nozzle temp to clean the stuck filament, then I try to raise the Z axis. I put in a setting but it takes the printer sometimes 30 seconds to acknowledge I told it to move. Honestly this is worse than a $100 knock off from eBay and I have no clue where to start. I wish I had never bought what was really a few CF parts for the upgrade. Does anyone have any ideas on what else I might try?

Best Answer by Slacker:

Well, for anyone that ends up here I believe I found the culprit. The thumbscrews holding the nozzle were just a bit loose, allowing the nozzle to move just enough to mess up the print constantly. Running a print now to confirm but it looks like that was the issue.

Napsal : 01/12/2024 4:25 pm
Talltim58 se líbí
Slacker
(@slacker)
Active Member
Topic starter answered:
RE: MK4 -> MK4s upgrade, now nothing but problems

Well, for anyone that ends up here I believe I found the culprit. The thumbscrews holding the nozzle were just a bit loose, allowing the nozzle to move just enough to mess up the print constantly. Running a print now to confirm but it looks like that was the issue.

Napsal : 01/12/2024 9:36 pm
TeamD3dp, ssmith, iftibashir a 1 lidem se líbí
TeamD3dp
(@teamd3dp)
Estimable Member
RE: MK4 -> MK4s upgrade, now nothing but problems

Don't forget to mark this thread as resolved if that was the culprit.  It will help others to know that this thread has a possible answer to ago along with the problem.

-J

Napsal : 04/12/2024 3:55 am
Brian se líbí
Talltim58
(@talltim58)
Member
RE: MK4 -> MK4s upgrade, now nothing but problems

I had and found the same problem don't forget to check your nozzle tightness that was my second problem after fixing this problem.

Napsal : 07/01/2025 3:04 am
Burnsie
(@burnsie)
Member
RE: MK4 -> MK4s upgrade, now nothing but problems

Literally have just been through the same thing as you yesterday. I was about to throw the printer out of the window, until today when I thought to check the nozzle thumbscrews. Now I have perfect prints. I think they might work themselves loose over time causing the nozzle to drop a little. 🙄 

Napsal : 07/01/2025 9:43 am
ssmith se líbí
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