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The secret ingredient is crime
(lemmy.world)
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this post was submitted on 05 Aug 2025
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Its also something you built with your hands and brain. There are few things which feel as good.
Oh yes! The correct answer is to 3D print a plastic knob for the front of an oven. There's not going to be any heat issues there! And no one can deny how beautiful that black knob looks next to the brushed metal.
There is no single correct answer. There often isn't, in fact.
As for heat: You can treat PLA to be more resistive to temperature and even at stock, untreated, cheapest PLA wont just deform from hot air escaping since the thing melts at 190 and the air wont be that hot for long enough. It may deform with regular use though. You also don't have to use PLA and use something more temp resistive.
Beauty? Eye of the beholder. Its a conversation piece. Its something you point at and say "I made that". Its wabi-sabi, I like it.
190 celsius, I'd like to add.
If it melts, just print another!
The knobs on your oven are overwhelmingly likely to be either completely made of plastic or contain a large percentage of plastic already. Typically they're made of ABS or PBT.
PLA probably isn't a good choice for this application but you could absolutely print some knobs in ABS or ASA and you'd be fine. You can even get PBT filament, but that's probably more hassle than it's worth and ABS is cheaper.
The stock knobs are most likely plastic already, but I do agree the black knob looks stupid. It would probably look a lot better to print matching replacements for all of them.