Stan's "Quenching Disk" what it is? And Testing

[phil]

russ, tell me what size disc, what size holes and how many holes you want. My neighbour works for a precision engineering company and can drill those tiny hole. Hes already told me cost will depend on how many drill bits he snaps. He can work in ceramic and could probly make it from an off cut of some ceramic material. Hes a mate so will prob do it on his lunch break for cheap..hopefully.