My buddy in the pattern shop kept telling me to switch to a 2% zircon additive for our aluminum castings, and I finally tried it last month.

2 comments

2 Comments

seanh9120d agoMost Upvoted

Seems like a lot of fuss for not much gain.

schmidt.amy20d ago

Yeah, totally. We ran a whole batch with it and honestly, the finish was maybe a tiny bit smoother? But the extra cost and the mess it made in the shop just wasn't worth it. Felt like we were just creating more work for ourselves for no real reason.