End grain Osage selfbow questions

[Stickhead]

I've got an unusually straight-grained Osage "stave," about 2 1/2" x 3" x 70", cut from a thick board.  The grain is oriented such that a single growth-ring selfbow is not a great option, but I think I can carve a nice end-grain-back bow from it without violations.  I'm thinking on a pyramid style, 65# @26", 60" or so in length.

I've never made an end-grain bow.  TB1 says this should make for a strong back, but is it risky not to back it?  I'd prefer to make it a selfbow if I can.

Also, should I line up the bow such that the rings across the back are in line with the centerline, or should I follow a single grain line along one edge of the top limb, and anlong the opposite edge of the bottom limb?

While I'm at it, what would be a good starting width for the limbs on this?  I've got plenty to work with.

Thanks for any advice!

-Tom

[George Tsoukalas]

I don't know what you mean by "end grain"? The board cuts are =plain sawn // rift sawn and || quarter sawn as viewed from the butt. Any of these will made a board bow provided the edge grain is straight==== tip to tip. Take a peak at my web site for board bow info.. Jawge
http://georgeandjoni.home.comcast.net/~georgeandjoni/

[Stickhead]

Thanks, George,

I think I got the "end-grain" term from TBB1, meaning that the growth rings run just about perpendicular to the back of the bow.  This was originally a thick plain sawn Osage board that a local rancher had milled, about 2 1/2" x 3" x 9" x 70".  I ripped it into three 2 1/2" x 3" x 70" stave-like pieces.  The middle stave made for a nice single growth ring back selfbow.  The outside staves don't have rings tangent to a flat surface, but have nice straight grain lines down the length.  (Boy, this is hard without a picture.)

I'm thinking that I'm in good shape, since the lines run very straight down the length.  I'm just not sure how strong this type of back would be compared to a single growth ring back.

[Buckeye Guy]

If I am understanding you correctly!
It will make a nice bow and be able to do all you want !
Use your regular diminsions.
Guy