Hi Ron. Not yet, although I’ve been wanting to have a go since I got my laser almost a year ago! I’ve got some white tiles as well as some PVA and TiO₂ ready. I also plan to try some other metal compounds such as copper oxide and/or silicate to see whether I can achieve different colours. I might also try some ready-made colours intended for ceramics to see whether that works too.
Actually, while I’m here: Your recipe specifies 1 Tbsp TiO₂, I’m sure it’s not that critical but is that level or heaped, or would you happen to have that in grams? Cheers.