I've had decent luck with silicone molds too, but yeah, precision can be tricky. Injection molding is great for repeatability, but honestly, resin casting with a pressure pot covers most home projects just fine...depends how picky you are about tolerances.
Yeah, resin casting with a pressure pot has worked pretty well for me too, especially since injection molding setups seem pricey for casual use. But I'm curious—does anyone notice significant shrinkage or warping with resin casting over time? I've heard mixed experiences about long-term stability, and if precision is already tricky, wouldn't that throw off tolerances even more down the line...?
I've messed around with resin casting a fair bit, and yeah, shrinkage can be a real headache. Did a small run of custom knobs for some vintage equipment a while back—looked perfect at first, but after about six months, a few had warped just enough to mess with the fit. Not terrible, but noticeable. Guess it depends on the resin type and curing conditions, but if precision's critical, injection molding might save you some grief down the road...assuming you can justify the upfront cost.
Yeah, resin shrinkage caught me off guard too. I tried casting some custom drawer pulls for my kitchen cabinets—looked awesome initially, but after a few months, a couple warped just enough to annoy me every time I opened a drawer. Injection molding sounds tempting for precision, but the upfront investment seems steep for small-scale stuff. Maybe it's worth it if you're planning a bigger run or need super consistent results, but for one-off home projects...resin might still be the way to go, imperfections and all.
Yeah, resin shrinkage can be a sneaky issue. I've run into similar headaches when making custom knobs for some built-ins. One thing that helped me was switching to a slower-curing resin and being extra careful with the mixing ratios—seems like even tiny variations can make a noticeable difference in shrinkage and warping. Injection molding definitely has its perks, but unless you're cranking out hundreds of identical parts, the cost and setup hassle might outweigh the precision benefits...
