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Milhooz
(@milhooz)
Trusted Member
Fuzzy/white walls

Hi,

I'm sharing a problem that I have, I think when printing items with a flat base attached to the platform. The walls are fuzzy/white and are a bit wider than intended. Would be glad if someone already had this problem and was able to solve it. It might be related to the suction of the FEP film but it is weird it continues after the flat layers are completed.

More pictures here: https://imgur.com/a/B4D0IoD

This is with Prusa Black resin and in the gallery you can see the same effect with Prusa Azure Blue. Sanding was effective at removing the defect but it takes some time. You can see on the black part below the white stop clearly on a layer line, and exactly on the same line where a logo is embossed and then it starts again after the logo his completed. Only the walls on the layers were there is the logo embossed are good out of the printer. I don't understand the reason. The part has a flat bottom but it's only a few layers thick.

 

Thanks for your help if you can.

This topic was modified 4 years ago by Milhooz
Posted : 30/03/2020 5:31 pm
Milhooz
(@milhooz)
Trusted Member
Topic starter answered:
RE: Fuzzy/white walls

Sorry, I cannot edit my post anymore but here is the picture

Posted : 30/03/2020 5:42 pm
Dario
(@dario-2)
Eminent Member
RE: Fuzzy/white walls

In my experience white stains are residue from the IPA that was not cleaned before curing, if you have a CW1 enable preheat then cure.

Also maybe you are cleaning in CW1 and don't have enough IPA this would explain that it is on certain level.

This post was modified 4 years ago by Dario
Posted : 22/04/2020 6:39 pm
Milhooz
(@milhooz)
Trusted Member
Topic starter answered:
RE: Fuzzy/white walls

@dario-f

The issue is that the white stain already appear out of the printer, before cleaning and curing.

Posted : 27/04/2020 9:46 am
Dario
(@dario-2)
Eminent Member
RE: Fuzzy/white walls

I tried now printing directly on build plate and got the same results, it seems that it is connected to stirring of the resin or  quality of the resin.

Will try with now with resin stirred.

Posted : 27/04/2020 12:44 pm
Milhooz
(@milhooz)
Trusted Member
Topic starter answered:
RE: Fuzzy/white walls

I've printed two of those, one without properly stirring the resin and then the second one was stirred, I still got the lines, I think maybe it is the pulling on the FEP film that does that, I'm not sure.

Posted : 27/04/2020 1:37 pm
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