Pinning with electric engraver

Can someone please direct me to the post regarding pinning with a modified electric engraver...I can't seem to find it anywhere. Thanks

The thread is here.

I started out really liking the method, and I still use it for some cleanup work on pins, but I now prefer to use a jeweler's hammer. It was like $7 at Harbor Freight and all I needed to do to make it workable was polish the peening head.

I assure you that is not a euphemism for anything.