Anyone know of a source for Saturn-compatible cartridge shells, or how I might be able to get them made cheaply? The cost of injection mold tooling is way out of my price range. I thought it might be feasible to do it with some creative extrusion or thermoforming, but I don't have pricing info on that yet either, and there are definitely some engineering challenges involved with getting a good result from those methods. Casting resin might be an option, although that's awfully labor-intensive and the materials are somewhat costly...
Any ideas?
Any ideas?