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C10H15N [S] 2 points ago +2 / -0

PLA, raft only

The "imperfections" are part of the lithophane the different thickness is what creates the image when light shines through it, what you think is bubbling is actually stars once illuminated

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inspir3dgenius 3 points ago +3 / -0

Wow. Can't believe I didn't see that at first!

I used to do print lab management testing reverse-engineered Stratasys protocols and other materials testing, so I guess I fell back on that.