We're currently trying to choose the material for the sides of the akkupack project, and due to laser-cutting Aluminium being not quite expensive, but still costing a considerable amount, we're looking at alternatives.
Acrylic would be one suitable candidate, though the brand-name acrylic costs around 40€/m².
I still have some Kraftplex (pressed cellulose fiber) around and we did some very unscientific stress testing on that. It unfortunately doesn't quite make UL94.
yes, yes. I know that UL94 is for plastics but anyways, a fun experiment.
After working it with a blow torch for I think close to a minute, it burned for a little less than two minutes and was glowing a few more minutes after that too.
Though the only affected area was the one we directly held the flame to and it didn't spread one bit further.
I think that's good enough. Oh and seeing that UL94 specifies a 50W flame, and we took like >1kW to it, we need further testing.
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