Traditional tanged spokeshaves.

[Stewie Simpson]

Does anyone else work a mild convex camber on their flat bottom spoke-shave blades.

Stewie;

http://i1009.photobucket.com/albums/af219/swagman001/spokeshave%20sharpen/_DSC0322_zpsbumanowi.jpg (http://s1009.photobucket.com/user/swagman001/media/spokeshave%20sharpen/_DSC0322_zpsbumanowi.jpg.html)

http://i1009.photobucket.com/albums/af219/swagman001/spokeshave%20sharpen/_DSC0323_zpsuutjzvs7.jpg (http://s1009.photobucket.com/user/swagman001/media/spokeshave%20sharpen/_DSC0323_zpsuutjzvs7.jpg.html)

[Bill Houghton]

No, but it's an interesting idea.

That's a stunning shave.

[lowell holmes]

I have a travisher that has a 5" radius. It looks like a spoke shave. I thought that spoke shaves are flat.
I also have a Dunbar travisher that has a more severe radius. I like the shallow curve of my 5" radius shave.
The Dunbar travisher is 4 1/4" radius.

I obviously I misinterpreted your post. :)

[george wilson]

I do,when I make them.

[Eric R. Smith]

Due to my ignorance,may I ask why would you put a camber on the blade? Generally the blade is contacting the wood's surface at some point of a convex or semi flat surface and the whole blade would not be engaged with no worry of the corners digging in. My experience is limited to chair parts so I have not used a spoke shave for other projects.

[Bob Glenn]

Most of mine have a mild concave camber from use on chair spindles.

[Stewie Simpson]

I took some measurements this morning.

The length of cutting edge for this spokeshave blade is 3 inches.

After a fine set has been applied to the spokeshave blade, the length of exposed cutting area is reduced down to 2 1/4 inches.

The depth of cut at the mid point of the exposed cutting area is about 0.2mm. From each side of that mid point, the depth of cut reduces as a result of the applied convex cambering.

The height of convex cambering was measured at 0.8mm with a steel rule.

I also checked the flat of the blades surface near the cutting edge, and it has a slight convex curve of 0.5mm.

As you will note within the following 2 photo's, I have more than 1 tanged spokeshave.

regards Stewie;

http://i1009.photobucket.com/albums/af219/swagman001/spokeshave%20sharpen/_DSC0324_zps2ivxa8x6.jpg (http://s1009.photobucket.com/user/swagman001/media/spokeshave%20sharpen/_DSC0324_zps2ivxa8x6.jpg.html)

http://i1009.photobucket.com/albums/af219/swagman001/spokeshave%20sharpen/_DSC0325_zpss0m8pngk.jpg (http://s1009.photobucket.com/user/swagman001/media/spokeshave%20sharpen/_DSC0325_zpss0m8pngk.jpg.html)

[Stewie Simpson]

Due to my ignorance,may I ask why would you put a camber on the blade? Generally the blade is contacting the wood's surface at some point of a convex or semi flat surface and the whole blade would not be engaged with no worry of the corners digging in. My experience is limited to chair parts so I have not used a spoke shave for other projects.

Eric; imo the beauty of applying a convex cutting edge to a traditional spokeshave lies in the ability to feather the depth of shaving without needing to continually adjust the blades set.

Stewie;

[Stewie Simpson]

I had a quick search in the workshop for the left over nos tanged spokeshave blades. The one I wanted to find has a massive 4 inch long cutting edge x 3/4 " width. I did come across this much smaller size nos blade, that has an 1 1/2" length of blade.

Stewie;

http://i1009.photobucket.com/albums/af219/swagman001/spokeshave%20sharpen/_DSC0329_zpsyfrssgos.jpg (http://s1009.photobucket.com/user/swagman001/media/spokeshave%20sharpen/_DSC0329_zpsyfrssgos.jpg.html)

[Eric R. Smith]

Eric; imo the beauty of applying a convex cutting edge to a traditional spokeshave lies in the ability to feather the depth of shaving without needing to continually adjust the blades set.

Stewie;

Stewie, thanks for the reply. I can see how the camber can feather the cut, especially if you use a slicing motion as you move the blade along the surface. I will be adding a camber to my blade. I think it will improve the smoothness of my surfaces. Thanks for the tip. Beautiful collection of spokeshaves by the way. Are they from a new maker or are they antiques?
Cheers,
Eric

[Stewie Simpson]

Eric; I wouldn't class these spokeshaves as being antique. They were made 15yrs ago.

Stewie.