On Wed, May 31, 2017 at 7:31 PM, Christopher Dunn <
christopherdunn123@g...> wrote:

> I bought a huge wooden panel raiser plane with a 4-1/4" wide tapered
> iron, and started flattening the back of the iron on my coarse diamond
> stone. Five hours later, and only about half the cutting edge is flat
> (the two corners are low). I've never dealt with such a wide blade
> before, but there's got to a better way.
>
> So what's the better way?
>

I am with Bugbear on this one, AlZi paper is a wonderful thing.  I bought a
50' remnant once, and have it glued down to my Scary Sharp setup for really
gross things.  It works better than my power sharpener with 100 grit, as
that wears too quickly.  I have 18+ inches glued down, and go sideways with
the usable part of the blade.  (It should be closer to the edge of the
glass for better performance.)  Super magnets on a stick work great for
holding the blade flat without sanding your fingers when its away from the
edge like this.

https://kirkhmb.smugmug.com/Woodworking/Shop-Stuff/i-JHGpCkk

I am doing a ~2" spokeshave blade right now that had the reverse of yours,
low in the center.  By taking an angle, I minimized the blade material
loss.  Unfortunately, someone I am pushing down the slope is using my SS
system, so the power grinder is taking a beating.

Left most Spokeshave here
https://kirkhmb.smugmug.com/Woodworking/Woodworking-Tools/i-drD5KTp


-- 
Kirk Eppler in HMB, CA