I’ve been getting this result on my finished parts (in this case PETG). I’m thinking it’s glue residue but I’m not sure. Is there any way to get rid of it?
Next time prepare the bed like this:
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If it is glue then it should wash right off.
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Try scrubbing with warm water and a rag or nylon dish scrubber. Any glue should come off, improving the color, but might leave a pattern behind.
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