The keycaps should be fully cured now! They feel a little tacky when you put them against a hard surface - not sure if that's just what polyester is like.
The bottom corners weren't quite filled but the caps feel nice! Weirdly they had the texture from the original when I demoulded at 2 days, but lost it during the rest of the cure.
The long cure time and the lingering styrene smell are making me want to switch to epoxy/urethane before I do any more casting.
@gbrnt Lingering styrene smell and tackyness = not fully cured yet.
If you don't _need_ them to be clear, mixing some fibres (glass is typical, but many other kinds can be used) will make them much stronger and not shatter like that.
Epoxy is also much stronger and less tricky to mix correctly.
@yngmar The styrene smell from the parts is gone, but not from the cupboard where I store the resin!
I think I just can't measure the catalyst accurately enough in these tiny quantities, even with a small syringe.
@yngmar I've got a scale that's slightly smaller with similar precision - I could see that my individual drops of catalyst were about 0.05g, which sounds right. I'm really not sure why that wasn't accurate enough. I also mixed for a good amount of time and scraped the sides well.
Either way I'm looking forward to using some epoxy with a 2:1 ratio or something
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