Okay, so I've been obsessed with upcycling wine bottles into drinking glasses, and let me tell you - these discs are LIFE. The old score-and-snap method had me wasting so many bottles before I found these bad boys.

First cut was a bit messy (user error, not the disc's fault!), but after 3-4 tries? Perfectly clean cuts every time. The thin blade gives me way more control than those chunky traditional cutters.

Pro tip: Wear ALL the safety gear. I learned the hard way when a tiny glass shard flew at my shirt - now it's goggles + mask + gloves every time. Also go slow at first - these cut FAST once you get the hang of it.

Bonus discovery: They work on tiles too! Did my bathroom backsplash with one disc (wet cutting FTW). Just don't believe those videos showing deep freehand cuts - that's asking for trouble with any angle grinder.

Only con? They're slightly thicker than I expected, but honestly doesn't affect performance. 10/10 would recommend to any crafty DIYer!