We’re accustomed to covering the use of 3D printing in casting, usually as a lost-PLA former in metal casting. That’s not the only use of the technique though, and perhaps one of the si…
  • @[email protected]English
    15•1 year 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

    • @[email protected]English
      7•1 year ago

      The advice on sex toys (not cement!) I’ve read suggests using beeswax. I wonder if this would work as well🤔

    • ROLLER
      1•1 year 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.

    • @[email protected]English
      2•1 year 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

    • JustEnoughDucksEnglish
      7•1 year ago

      You can also print the object and use it to make a silicone mold, right? That doesn’t stick to concrete.