Is there a shift in the Purge Tower also…??
yes its with purge tower.
Sorry to hear that.
It does happen, sometimes, nothing can be found to understand why.
It is a shame it happened where it did. It never seems to be somewhere less obvious like in the neck area.
In that case I would say that something bumped the table.
If it wasn’t in the tower, I would say maybe infill, adhesion, or a piece of filament from the purge tower got stuck on the sock/nozzle & dragged into the print.
Like what was posted above, sometimes you’ll never know…it’s part of 3d printing.
@lion7718 might be onto it. I was looking at the image and it looks like there’s a problem on the purge tower at about the same height as the defect in the model.
I’m on an X1C and watch filament changes as much as possible because sometimes the little bits extruded but not knocked off completely can get dragged into the print. If the head reverses direction and the cruft gets caught between the head and the model, it can do things even to breaking the model free from the bed.
It looks like there’s a lot of filament changes in that model when it gets to the eyes and on the belly. That ups the risk. If you can print the eyes and belly separately that would be a solution. But if you can’t, you may end up stuck to the printer to make sure you don’t get stray pieces.
Your filament is open air too. If you have high humidity you might want to look at a filament dryer since “wet” filament can string and make pulling bits more likely (if that’s what happened).
Last week I purchased a new A1 Mini as my third printer. I am having problems of layer shifts with the A1 Mini.
Layer shifts occur with the print in the picture below. I have slowed the print speed, but the problem still occurs. I have another printer which does not have this problem when printing this same part. The print settings in Orca Slicer are the same for both printers.
I have looked online and noticed many complaints of layer shifts with the A1 and A1 mini. Therefore, I am thinking that I might return the Mini to purchase something else.
Since I might return the printer for a refund, I want to check for input from the Bambu community for anyone with experience in dealing with layer shift problems with A1 or A1 Mini.
Thank you,
Don
Thank you for your help.
I have changed the print speed down to 150mm/s and travel speed down to 300mm/s.
I also changed to Gyroid infill.
These changes did not solve the problem. I continue to have layer shifts on the X axis with this new A1 mini, while the Y axis looks good.
I am concerned about the quality of this new A1 Mini. Should I return it and get a Prusa? If not, how do I fix this problem?
PS: I am new to this forum. Why doesn’t this forum allow me to attach a picture, a link, or allow me to start a new thread?
I have loved mine from the moment I received it, the same with the A1 and P1S.
I suggest you reach out to support.
The reason for this, is…
This.
Thank you. I submitted a support ticket as you suggested.
I’ve had the same issue, but it was because of me bumping the table
I have had on and off layer shifting on my A1 Printers I have 9 of them. Its been driving me crazy. And today I finally for the 2nd time (twice today and 2 different printers) caught what happened. When changing colours the nozzle wiper does not flick the filament out during purges so it ends up with a larger clump of filament stuck in the little wiper tray. Then the nozzle comes back again to purge and change colour and there is so much purged filament built up in the little purge tray that I could hear a nozzle crash, this must have caused a belt skip and therefore in turn a layer shift on the tower and the prints on the plate. Then eventually all that extra stuck material is nocked out of the little purge tray under the nozzle so if you are away from the printer you would never know this was the cause. So much for step loss recovery working. NOT !!!
Thank you for this post, I think that it helped me solve the problem I’ve been having with the filament change layer shift.
I took a look at the wiping mechanism on my A1 and noticed that it was “stuck” at the end of the wiping platform. The arm was getting interfering every so slightly with the platform not allowing it to retract when the extruder head moved back to print.
As you can see from the above photo, the extruder head is not parked but the wiper arm is still stuck.
So I had to adjust the wiper arm by tightening this screw down and slighly bending the arm upwards to give it additional clearance above the platform.
I suspect that the vibratiions from the high speed movement caused the screw to loosen an the arm to sag. I’m going to try printing my layer shifted recent print again to see if this helps. I’ll report back if it helps.
