Stanely #7 - Flatten sole?
HB
>First let me say that I do not endeavor to become a member of the flat sole society; however, this one has me thinking that maybe it does need some remedial work.
The issue is that the sole of the plane is concave along it's length. It appears that the mouth is about 1/32 higher than the toe and tail.
As my skills have improved, I've begun to notice that this shape is finding it's way into my work. When jointing, I have to compensate a bit at the beginning and end of the edge because they wind up lower than the center of the board - even if I start at the center of the board with a small hollow before jointing the entire edge.
I recently prepped some shorter pieces ( 18-24 inches long) and in all of them I managed to form a high spot in the center of the board while flattening each with the jointer. I needed to remove the high spot with a smoother.
Now I think that I want to get this plane flattened at least to the point where the mouth, tip and tail are coplanar. I don't think I want to go out and buy a plate or a piece of granite to use as a flattening plate because I don;t see myself doing this very often, if at all again, since a small deviation from flat won't really matter on a smaller plane and this is the only one I really need to be accurate. I kinda just want to take this to a machine shop and have it done. What I'm hoping to get from the boards are tips on what to tell the machinist, and how to prevent them from screwing this up. So far I know that the frog should be securely installed in the plane while it's being flattened, but do I also need to have the blade and cap iron installed?
Any tips would be greatly appreciated.
HB