You're Not parinoid (They are really looking at me far too!). My wife is actually a glass artist and she uses silicone carbide to grind and polish her glass. Actually we have a device named a flat lap which is a substantial steel plate that spins while water and carbide http://beckettkpby012.almoheet-travel.com/responsible-for-a-silicon-carbide-igbt-budget-12-top-notch-ways-to-spend-your-money