Most people think “3D printing” means filament printers, and I still use my Bambu Lab X1 Carbons all the time because they’re basically peak FDM right now. But FDM hits a hard wall on tiny, high-detail parts—like mouse scroll wheels—because you’re limited by nozzle size. In this video I show why resin printing is a totally different league: you’re curing liquid resin with UV light, printing entire layers at once, and the detail is ridiculous—closer to what you’d expect from injection molding than a hobby printer. I started with the Formlabs Form 4 for prototyping the Zero Mouse and immediately realized the parts were straight-up production quality. Then I stepped up to the Form 4L, which is basically a resin workhorse with a massive build volume and the key resin advantage: one part or a full plate takes almost the same time. I walk through the setup, the PreForm workflow (auto orient, auto supports), the cartridge resin system, and the wash + cure steps that normally make resin printing painful—except Formlabs makes it weirdly frictionless. It’s expensive, but for iteration speed and output (dozens of parts per day, potentially ~1,000 in a week or two), it finally solves the problems that kept me away from resin for so long.