Hello makers.
I have the a1 on irregular usage over the course of 8-10 month i guess.
Lately all my prints, doesnt matter the profile ,filemant or nozzle, are all messed up like you see in the pictures.
Someone on reddit pointed me towards a bended z axis, but how? and why now,after several good prints?
Would appreciate any sort of feedback. Thanks in advance.
Here are the problems :
here are earlier prints:
both z rods :
Clean and re-grease the Z rods. The way a “ball screw” mechanism works, too much lubricant on the screw can cause positioning errors same as not enough lubrication. If those white blobs on the screws are where the Z axis is sitting when it’s printing your example prints, that’s almost certainly the problem.
I don’t think a bent screw would cause the problem, but you can see this for yourself by just running the Z axis up/down and watching the screw to see if it’s wobbling as it rotates. But if you haven’t dropped the machine or beat on it with something heavy, I don’t see how the screws could spontaneously get bent enough, so I am almost certain you’re not going to see wobble and “bent” isn’t your problem.
Thank you for your reply. I did as you suggested and tried 2 prints. Both remained in the same, bad quality 
Do you have any other things I might try?
No change at all?
I don’t know enough about how the A1 is built to suggest anything else. The issue you’re having looks like a highly-repeatable Z axis error. If there’s a belt that drives the screws, you might check that to see if it’s damaged and/or if there’s some printing debris stuck to it, or maybe one of the pulleys the belt rides on is wobbling…
I don’t think it’d help, but you should probably try doing a full recalibration of the printer.
Nothing,no.
Alright, I will try that route within the next week,since its seems like a big task to get into.
Thanks for your help !
So got finally time to do everything you said and… nothing.
No debris, no damage. Calibration did nothing, aswell as default setting for everything and resetting the printer.
What i noticed is some “clack” sound. I’ve recorded a little part of the standard cube print and near the end of the 1 min video you hear the sound.
Any further ideas?
Did you manage to solve the problem? Because from what I can see, I have the same issue…
I’m sorry for the delay.
Yes, I have the problem solved. But I don’t know for sure sadly what it really was in the end. I changed so incredible much and sometimes 2 things at a time.
My guess is it was a filament thing. Either some buildup from changing between petg,abs and tpu, or some faulthy filament,in my case abs.
If I recall correctly I stopped bothering, needed a few functional,non good looking prints anyways, so kept printing AND HOT IT IS. Somewhere along the line I GUESS with a lot of new spools it went away.
Sorry if this is not helpfull probably to you, but I wanted to atleast reply .
