The advice on sex toys (not cement!) I’ve read suggests using beeswax. I wonder if this would work as well🤔
Comment on Casting Concrete With A 3D-Printed Mould
RegalPotoo@lemmy.world 1 week ago
Having tried similar things, I cannot stress enough how much you want to be printing molds like this in TPU unless you really really want your mold to be permanently embedded in the concrete
Mora@pawb.social 1 week ago
hooferboof@lemmy.world 6 days ago
Pla and a heatgun works but its not ideal. Definitely takes a while to melt off from more complex geometries akd isnt reusable.
In theory ABS is acetone soluable but ive been having a hard time coming up with a usecase where acetone is preferable to anything else
roller@twit.social 6 days ago
@RegalPotoo @Wilshire good point. Release agents are used for casting concrete. They look to be oil and water mix so I'm guessing most plastics would be compatible.
Also has to be a clear path out for the print/concrete.
JustEnoughDucks@feddit.nl 1 week ago
You can also print the object and use it to make a silicone mold, right? That doesn’t stick to concrete.
RegalPotoo@lemmy.world 1 week ago
True, but silicone is 10-20x the price of TPU