Mold making without the CAD.

Yes. Every generator is free to use, and a free account gives you 5 STL downloads a week across all tools, every week, with no card. Pro ($20/mo) unlocks unlimited downloads, replaces the Meshcast mark with your own logo and adds commercial rights.

No. There is nothing to download or install and no CAD software to learn - you work in a browser tab. Most generators do all the geometry on your own device; a few of the heavier mold tools send your model to our server to build it and delete it as soon as your download is ready.

Molds for candles, soap, resin, plaster, concrete, chocolate and ice, plus cookie cutters, name signs, planters, keychains, lithophanes and more. Pick a generator above to see what each one does.

Upload an STL, OBJ or 3MF, or start from a built-in preset. You download a watertight, print-ready STL or 3MF that goes straight into your slicer.

Yes. Your files are never sold, shared, published or used to train anything, and there is no library of user models on our side. Most generators run entirely in your browser, so your file never leaves your device; the few that need server-side computation process your model only to build the result and delete it immediately afterward. We do keep a small preview screenshot of each generation for 30 days so we can spot a tool producing broken results, and anything you deliberately attach to feedback or save to your account. The privacy policy lists all of it.

Any FDM printer the mold fits inside. A $200 Ender or a Bambu A1 is plenty. Use standard PLA or PETG, 0.2 mm layers, and no supports on most molds. Resin printers work too and give a smoother cast surface. If your bed is small, scale the model down in the tool before you download.

Not directly. Printed plastic has tiny layer gaps that can trap bacteria, and most filament is not certified for food contact. The reliable route is to print the mold, cast food-grade silicone in it, then use that silicone for chocolate or ice. Wax, soap, resin, plaster and concrete cast fine in the printed mold. More in the food-safety guide.

For wax: print the mold, fill the cavity with water, and weigh it. That gram number is close enough, since soy wax sits near 1 g per ml. For silicone, which is a different sum because you are filling the space around your object rather than the cavity inside it, the silicone calculator gives you the volume, the weight and the cost from your object's dimensions. Always mix a little extra either way: running short mid-pour is the one mistake you cannot fix, because a second batch will not bond to a first that has started to skin.