

Crystal repair
A friend asked me to work on his grandfather’s watch. I’m a noob so I want to practice with multiple donors before I touch it. I think the seiko he wants me to help him with uses a mineral crystal. Bought a polish kit with diamond paste and went to work on the invicta. Really just textured the scratches. It’s acrylic so I’m assuming it’s easier than the Seiko. I’m planning on taping the Seiko properly. Ideally I guess id pop the crystal but not sure if I can use my normal round press without cracking the glass. Although I’ve seen people use burnishers to polish plated watches without removing metal, I thought id leave the case alone. I’m not at the point that I can fully service the watch but I could oil and adjust timing.
Advice?