3DPrinting

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How can I stop Red PETG from being too Transparent on a Top Surface? (lemmy.blahaj.zone)

submitted 5 days ago by Mr_Mofu@lemmy.blahaj.zone to c/3dprinting@lemmy.world

12 comments fedilink hide all child comments

I'm working on a Project that Prominently Features a Red PETG Top Surface that after the Printing is done gets Sanded with Grits from 400-2000 +Heat Treatment.

There is a Big Issue tho, After the Sanding is done, I can Rather Prominently see the Walls and Infill of the Layers Below. At first I suspected that I just sanded too much and that the internals weren't really filled in 100% as they should, but after some testing and Closer Inspection, it just seems the Red PETG is just Transparent enough that I can see the layer below...

So how do I stop this from Happening? Thus Far I played around with Fan Speeds, Nozzle Temps (±10°C), Layer Hight and Ironing all Solid Layers with Mixed Success, non Satisfactory enough however...

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[–] LastYearsIrritant@sopuli.xyz 5 points 4 days ago (2 children)

Infill is different from top layer shells. The infill is a different pattern from the top and bottom layers, and a different pattern from the walls.

Usually the top/bottom shells are set to 5 by default, and the walls are 2. If you bump the top and bottom layers to something like 10 or 15, they'll be much thicker before it switches to the infill pattern.

[–] Mr_Mofu@lemmy.blahaj.zone 3 points 4 days ago

Hm I see, ill give it a shot thanks!

[–] Mr_Mofu@lemmy.blahaj.zone 2 points 4 days ago (1 children)

So No matter what I try, It only does Infill before 1 Layer of Top Surface. No settings seem to trigger anything else. Even putting infill at 0% makes it just hollow instead of producing more Top Surface Layers...

[–] papalonian@lemmy.world 3 points 4 days ago (1 children)

It isn't an "infill" setting. It's "top/bottom" settings. I don't what slicer you're using, but every slicer should give you the option to set the number of top layers and bottom layers.

[–] Mr_Mofu@lemmy.blahaj.zone 1 points 4 days ago (1 children)

Yes, top layer is set to 5 layers yet it only does 1 Top Layer since thats the surface. Rest is handled as Infill.

I tried everything from 1-100 Top Layers, nothing changes. Insides still get printed as Regular Infill.

[–] papalonian@lemmy.world 2 points 3 days ago

Can you please upload some screenshots of the model you're printing in the slicer, and the related settings? That's really odd behavior.