Acrylic Melts Back Together

Does anyone have any tips to prevent acrylic welding back together before you get a chance to weed it?

It sounds like your cuts may be overpowered. Try backing off the power or increasing speeds so you just cut through and no more.

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how thick is the acrylic you’re trying to cut?

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1/8"

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Is this Proofgrade acrylic? What speed/power are you using?

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if it’s 1/8", then @ekla is right. you’re probably overpowering significantly. i only get that melt back issue when i’m cutting really thick acrylic (like 3/8 or 1/2"). if you use standard PG settings on 1/8" acrylic, that should never be an issue.

unless, of course, it’s not cast or extruded acrylic, but some other type that may not cut well in a laser cutter.

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