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I'm trying to make some 3D printed microfluidic chambers on glass slides by using fused deposition modeling and printing directly on the glass. The problem of course is that due to differences in thermal expansion/contraction, the PLA falls off as soon as the glass/PLA interface cools due to thermal stresses. I've tried typical adhesives for printing like hairspray, etc. but these only really give a temporary bond until the material cools.
Are there any sprayable adhesives that could easily bond glass to PLA that I could use in a step by step mask method (printing the inside of the microfluidic chamber, spray the adhesive, remove the inside, print the outside chamber, etc.)?
Is there another way to get this to occur? I thought about poly-l-lysine treated glass as well, but I haven't had a chance to try that yet.
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