JGMaker is having a CLEARANCE sale on the commercial-grade Z-603S -- at a BONKERS $399. If you're in the USA, and want a ready-to-go full steel frame printer... run, don't walk! ⏩ JGAURORA Z603S CLEARANCE ⏪ Only 4 units left!

A5S -Layer shifting

Hey guys,

I am a bit out of my depth as to what could be wrong. I have searched on the forum for more cases of layer shift and read the wiki. I recently replaced the Bowden tube and after that it seems like my printer isn’t printing the last few layers of every print straight. Now I noticed two things that seem unrelated but I wanted to ask you guys.

1. My power switch doesn’t seem to turn off, like it won’t click off.
2. The heating block has leaked filament through the block and it got rather globbed. 

And the nozzle isn’t hitting the print. 


  • Samuel PinchesSamuel Pinches Posts: 2,900Administrator
    edited March 26
    Ok, as boring as it is, we need to narrow down the possible causes. Can you start with some simple test cubes, to see that everything else is printing ok. You can take a print test cube, and stretch it in the Z direction to make a tall tower, at least as tall as this print. Print it with zero infill first, and if that is successful, try with 20% infill.
    I don't think the bowden tube would cause this issue though. Not sure that is related or coincidence.
    1. Power switch sounds like it is faulty. A few A5S seem to have this fault unfortunately.
    2. Can you show some more photos? This may need to be cleaned off first -- heat the block up to temp, and carefully try to wipe away the globs? Have you changed the nozzle before?
    Post edited by Samuel Pinches on
  • michalko99michalko99 Posts: 99Member, 🌟 Super Member 🌟
    Hi. Point 2 might be correct clue. If burned filament drops from nozzle block to printed part, according to size of printed part, it has enough time to cool down. Another pass of nozzle will hit it hard. I see that it happens on Y axis-the weaker one, because of big mass caused by heated bed.

    check your tightening. Nozzle should not be screwed in into heater block completely. Your overburned filament is visible in red marks.
    Thanked by 1Samuel Pinches
Sign In or Register to comment.