chisel plane theory
ydb1md
>I�m building a chisel plane and I was thinking about the bedding angle, the angle on the iron and the clearance angle between the iron & the wood surface.
I�m probably going to bed the iron at 20* -- 15* seems to shallow for wood. In terms of the clearance angle, the goal of a chisel plane is to shear anything off that�s above the plane of the wood. Wouldn�t you (in theory) want a back bevel on the iron that matched your bedding angle, which would give you a clearance angle of zero? Or, at most a clearance angle of a degree or two? This would minimize the irons tendency to dig into the workpiece.
I can�t recall having read anything on this topic before. I know that a common complaint about chisel planes is that they tend to dig in and they have no support in front of the blade. Minimizing the clearance angle behind the blade should help to minimize these tendencies.
What do you think?
Dave
