Thread: Cast Iron Lapping Plate

This is a cast iron lapping plate inherited from my great-grandfather. I would put its age at ~70 years. Unfortunately the pictures aren't very good today because it is: 1) late, 2) in a fluorescent lit shop, 3) taken with a 7 year old digicam with an electronic viewfinder that doesn't match up with the shot being taken! Anyway, the lapping plate is 6x10" and uses fine valve grinding compound to do the cutting. As you can see, there is a wide spaced and narrow spaced side. I tend to use the wide spacing on hones. When you're all finished, you wash the grit off in the sink and get honing!