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Gap in seam, or pattern from seam  

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MartenKL
(@martenkl)
Active Member
Gap in seam, or pattern from seam

Using default profiles for Prusament PETG +Detect Thin walls. I get a pattern spiraling around the funnel. Changed Seam to Back (from Nearest/Default). So just a little bot too little filament on layer change I guess, how do I fix that? This is two layers 0.2mm default quality profile for 0.4 nozzle.

 

Nearest

 

Seam Back

Posted : 13/07/2022 5:30 pm
sandysasmita
(@sandysasmita)
Trusted Member
RE: Gap in seam, or pattern from seam

Bad nozzle, change to a new one, or if you don't have one or too lazy to change it, you can reduce retraction from default 3.2mm to 2.0mm.

Posted : 14/07/2022 8:17 am
MartenKL
(@martenkl)
Active Member
Topic starter answered:
RE: Gap in seam, or pattern from seam

Wow that was quick, less than a week old on only Prusament PLA and Prusament PETG. The gap closed when I added 0.5 on Extra Length On Restart and increased extrusion to 1.05. Not sure what sort of fixed it. Will buy new nozzles, thanks.

Posted : 14/07/2022 10:26 am
Diem
 Diem
(@diem)
Famed Member

I suspect the sloping walls are too thin, try adding at least two extrusions to the thickness. 

Cheerio,

Posted : 14/07/2022 10:46 am
fuchsr
(@fuchsr)
Famed Member
RE: Gap in seam, or pattern from seam

What diem said. No way a nozzle wears out so quickly. 

Posted : 14/07/2022 1:20 pm
sandysasmita
(@sandysasmita)
Trusted Member
RE: Gap in seam, or pattern from seam

Previously (about 1.5 years ago) i only have one mini, and have some trouble like holes in print wall, a gap when start a new layer, stringing, etc. (the problem start about two months old) and i fix that issue by reduce retraction length, and because i sell 3d printed object, i'm affraid if i change the nozzle, my printer will get damage and cannot sell that item again (well i'm just newbie) so i leave it as it is with 2.0mm retraction.

and about one and a half year later my business grow up and need more printer and i buy two new mini, the first object i try to print is benchy the result is excellent... no more issue like my first printer...

and after about two weeks later, the problem came up same as my first mini... it shows up in all my mini... so i brave my self to change the nozzle with genuine e3d v6... and after that all my print result back to normal with default retraction length 3.2mm

so based on my experience, i assume there's issue with all my prusa mini nozzle, i don't know if this happened to many people or not, but that is my issue with only two weeks old printer.

anyway maybe diem says is right, the wall is too thin. So the print results will showing that gap.

Posted : 14/07/2022 1:55 pm
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