Conversation

Did you know you can use an early 90s CPU, the ones in the dark subtle purple ceramic package, as a whetstone to sharpen a blade?

It worked on one of my kitchen knives, but is a little bit fine to do a really top job in a reasonable time. The 040 in the pic turned out not to be as flat on the surface as it seemed - see the squares within squares in the abraded metal pattern.

Being an LC040 it may be more suited to dhrystone work.