Just for information sake...I have this steal tool about 10".

I first thought it was a simple flat tool...but it is actually a concaved surface tool with a taper pin for mounting.

My question to all you mirror tool gurus...is..what is this tool used for?

I'm assuming it is for grinding in convexed surfaces on lenses or Convexed mirrors. It simply looks like a steal 10" mirror..but from steal.

Any ideas?

Rob