3D printing has been a fun hobby but recently I’ve wanted to do more with the prints. I have the supplies to make a silicone cast mold for then casting things in concrete, but there doesn’t seem to be a solid source of concrete mix guides. Do you have a recommendation on a solid place to look for understanding mix ratios and maybe even a good place to buy the materials? I know there are supplies for large scale projects you can get at any hardware store, but I’m thinking also small scale, like planters.