Bedding angle for scraper plane?

[James Carmichael]

I'm making a wooden scraper plane using a jointer iron that's been ground to 45-degrees. The iron works pretty well as a hand-held scraper tilted forward about 20-30 degrees from perpindicular. The hook is turned away from the bevel and cutting done with the back of the iron.

This will be kind of a roughing scraper for removing wood fast, like flattening edge-joined panels, so I'm not looking for a super-smooth finish. Since I have a box full of these Anant jointer irons, I can grind additional irons to whatever bevel I want. But, the bedding angle will be fixed, so I'm looking for suggestions as to what will work best for this purpose. I can cut the body at 20-degrees, but an undercut bed seems like it may be a challenge to work with for securing the iron and getting the mouth angled properly.

What angle do you guys with 112-type scraper planes find most effective for stock removal?

[Mike K Wenzloff]

The beauty of the scraper planes is the angle can be adjusted for the hook, which varies. Much like what one does (mostly) subconciously with a hand-held scraper.

A fixed bed scraper. I would probably skip the hook. Find an angle that sans hook produces acceptable results. I would also use a blade with teeth, much like a woodie scraper plane used with a toothed blade for preparing veneer substrate.

Makers such as LN, Hock and I suspect LV make toothed blades, but you can make your own (although it's tedious).

Take care, Mike

[paul hamler]

You may find someuseful info here http://www.woodworking.org/InfoExchange/viewtopic.php?t=7684.
My recommendation would be to use a scraper blade at least .040 thick , file at approximately 45 degrees and an burnish an agressive hook using a heavy hand with a polished hard burnisher. A thicker scraper blade with an agressive hook will do a pretty fast job of stock removal.and the burr can be burnished flat then reformed several times before repeating the filing and stoning operation. Try sharpening a thick scraper blade ,form the hook or burr and try using it by hand like a card scraper. Once you have mastered the sharpening process, notice the sweet spot angle you are holding the scraper at when using like a card scraper ,use this angle in your wood scraper.Go to www.hamlertools.blogspot.com (http://www.hamlertools.blogspot.com) and see the post on 25 years of scrapers and see the first one I made of wood. The angle was copied from a Stanley 80,
Pqul

[James Carmichael]

Thanks for the info, Paul, intersting site, too.

I'm proceeding with a 20-degree (actually 110-degree) bedding angle, 20-30 seems to work best with the iron I'm using. I figure if I need more than 20, I can always make some wedged shims to put behind the iron.