Reply To: Stanley No 4 Gap Between Frog And Plane

Hi Matt. It’s a late reply to your post regarding the frog gap issue, but I have had a similiar issue with a Rapier 600. During the resoration I discovered that there was a fairly severe rocking motion of the frog when seated in the body. I did not use the plane previously, so I don’t know if the operation was affected. To fix it, I milled the bottom mounting surface of the frog to even up the mating surfaces. Of course that required milling both sides of the frog so I could square it in the vise. I cannot remember how much I had to take off the one side, but the pads were definitely uneven . Even though it looks like there is a lot of metal in the frog, there actually isn’t much there at all, so I was very careful not to take too much off. The frog now sits nicely solid on the body and plane performs very well.
Maybe this will help you out, if you haven’t found a solution yet.