Uneven extrusion depending on which way the print head is moving.
Hello everyone, I'm new to the PRUSA community and FDM printing in general, though I have had a bit more experience with SLA printing.
I'm having some consistency issues with my new-to-me MINI+, This printer was shipped to me with the z-axis removed for shipping and then reassembled by myself.
- Initially, I was noticing separation at walls, particularly nearer the the z-axis and front of the print (see photo 1 - all images have beens scaled but you should be able to open them to view them at full size). This does not exist on the left side of the print.
- Additionally, farthest away from the z-axis assembly, there is banding, (see photo 2) which does not exist on the right side of the print.
- Printing my first layer calibration, I'm noticing that as the print head moves toward the z-axis assembly (blue arrows in photo 3), the entirety of the line is narrower than the lines moving away (red arrows in photo 3) from that assembly.
- The actual filled rectangle appears to be pretty well formed (see photo 4) but is also on the left side of the printer where these problems don't seem to be present.
I've reviewed the xz skew help article and confirmed that the nozzle is consistent across the bed, so I don' think that's an issue here. I'm looking forward to your thoughts and suggestions, and thank you in advance!
Image 1:
Image 2:
Image 3:
Image 4:
Best Answer by mitchkramez:
Based on help from some other forum posts, facebook and reddit, and after trying everything else, I landed on my bowden tube being worn and decided to replace it, low and behold, it prints great again! For a bonus, I cut my old bowden in half to share how worn it'd become:
RE: Uneven extrusion depending on which way the print head is moving.
Based on help from some other forum posts, facebook and reddit, and after trying everything else, I landed on my bowden tube being worn and decided to replace it, low and behold, it prints great again! For a bonus, I cut my old bowden in half to share how worn it'd become:
RE: Uneven extrusion depending on which way the print head is moving.
Hello!
I think I might be experiencing the same issue, but it is hard to tell on my end because I am not getting a good first layer either. From these pictures, would you say that it is probable that my Bowden tube is also worn out? If so, did you purchase your Bowden tube from the Prusa site?
