Check out api.txt if you want to create your own blueprints.
Check crafting.txt to see crafting info.
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Depends on: default, dye, basic_materials.
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==HOW TO INSTALL THE MOD==
1.Download the mod, it may be a ZIP file.
2. Extract the folder inside to somewhere on the computer (if its a ZIP file).
3.Make sure that when you open the folder, you can directly find "README.md" in the listing. If you just see another folder, move that folder up one level and delete the old one.
4.Rename the folder to "3d_printer" incase it has another name.
5.Move the mod to "minetest/mods/" or "~/.minetest/mods/".