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  • Chipbytex64@awesome.garden
    Aug 24, 2026, 4:09 AM

    Did I immediately try again with a silicone mold? Heck yeah.

    Another melted plastic goo puddle, this time on a pink circular silicone mold. Next to it is an oven thermometer reading 350 degrees Fahrenheit (177C). All of it is resting on a non-stick baking sheet.
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Replies

  • Chipbytex64@awesome.garden
    Aug 24, 2026, 5:19 AM

    Shredded some more and tried it in a smaller, more detailed mold. Just heated this one with a heat gun since it was so small. Turned out not great, but I’m not too surprised by that.

    Dark plastic inside a small silicone mold.
    A Lego man head next to the extracted black reclaimed PLA head and a urethane casting from the same mold.
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  • Chipbytex64@awesome.garden
    Aug 24, 2026, 5:21 AM

    Presumably I could turn this stuff into filament but it’s hardly worth the effort. Flattened out sheets of it would probably work well with vacuum molding.

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  • Chipbytex64@awesome.garden
    Aug 24, 2026, 7:34 AM

    One last thing, a little pixelated heart. This cruder model worked well enough, but it never flows enough to get rid of the voids. I started it by melting in little bits with the heat gun, then finished it in the oven.

    Also this mold had epoxy/urethane/pigment residue on it, which baked off in the oven. So I guess that’s in my lungs now. :[

    A dark gray pixelated heart on parchment paper on a baking sheet.
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