Casting vs injection molding—which method works better?

jeff_barkley · 2025-05-24T14:56:17Z

I've been messing around with some small DIY projects lately, and I keep seeing people talk about casting versus injection molding. From what I gather, casting seems simpler and cheaper for small runs, but injection molding looks like it gives way more precise results if you're making a bunch of identical things. I'm kinda torn here...does injection molding justify the extra cost and complexity, or is casting good enough for most hobby-level stuff? Curious what others here prefer and why.

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rain_wilson

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Yeah, I hear you. For anything where you need a bit of flexibility or want that unique look, casting just makes more sense. On job sites, we use casting for custom concrete features all the time—costs less, less hassle, and you can tweak things as you go. Injection molding’s great if you’re mass-producing, but for most projects, it’s just not worth the setup.