Hi,

I have posted some thoughts and calculations about different ways to
sharpen a plane blade in a bevel down plane and the affect on cutting
edge support. I'm interested to know what people think. I am planning
on analysing bevel up planes and back bevels in bevel down and bevel up
planes. Any bright ideas could be incorporated easier now than after.

http://members.shaw.ca/petermichaux/...nGeometry.html

There is an excel spreadsheet at the bottom you can download and play
with too.

Thanks,
Peter