this post was submitted on 25 Aug 2023
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Injection molding is something hobbyists do once in a while. Plans for the machines are not hard to find (Vince gingery wrote the book most use). Unlike 3d.printing though, you can't go from CAD to a part directly, instead you need to build the mold and that is not easy makes the process a lot more difficult and it needs more tools (a milling machine) and skill.
Still the results are a lot better than 3d printing and it isn't as hard as you might think. It is worth looking into, to see if maybe it is for you.
You can make injection molding blanks with 3D printed parts but it's still not an easy process from what I've seen. It'd be better/cheaper/easier just to make your own external protective case.