If you’re 3D printing your own pieces or resins, this barrier liquid from Procad will make a big difference.  If you’ll be direct casting, dip your resin into the liquid after curing. This will create a barrier between the resin and investment powder, preventing the resin from migrating into the investment.  If you’re making a rubber mold, applying this to your resin will keep it from sticking to the rubber during the vulcanizing process.  For the best tools and tips on 3D printing, visit Stuller.com/tools.