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Original Prusa i3 MK2.5 & MK2.5S
How do I print this? (Printing help)
Irregular first layer problem
 
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Irregular first layer problem  

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Carl A
 Carl A
(@carl-a)
Estimable Member
Irregular first layer problem

First layer .2mm .4mm layer .8mm layer

I have changed speed, changed Z height, changed temp of both bed and extruder but keep getting same problem. Happens with both PLA and PETG. Do I have a heat bed problem? Or am I missing something?

Publié : 19/01/2023 1:44 am
Diem
 Diem
(@diem)
Illustrious Member

Your first layer 'Z' offset is calibrated a little too low.  It looks like there are fingerprints on the build sheet in a couple of places near the edges.

Cheerio,

Publié : 19/01/2023 5:50 am
Carl A
 Carl A
(@carl-a)
Estimable Member
Topic starter answered:
RE: Irregular first layer problem

I clean my bed with alcohol between each printing. I will try again to adjust my Z axis offset. Have messed with this before but did not solve problem. Will advise 

Thanks for the answer.

Publié : 20/01/2023 3:44 am
Diem
 Diem
(@diem)
Illustrious Member

I clean my bed with alcohol between each printing

If that's not shifting it then it's time for the dishwashing detergent (Dawn/Fairy) and plenty of HOT water.

Cheerio,

Publié : 20/01/2023 10:45 pm
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