Primitive Archer

Main Discussion Area => Bows => Topic started by: hunterman on October 25, 2007, 02:07:23 pm

Title: i feel stupid
Post by: hunterman on October 25, 2007, 02:07:23 pm

bought VII of the bowyers bible yesterday and im already confused  ::).  what are conventional, decrowned, bias and edge ring cross sections??? what the bloody hell does decrowned mean anyways.  ???

Title: Re: i feel stupid
Post by: snedeker on October 25, 2007, 02:31:30 pm

Conventional means its the natural ring surface of the stave.  Decrowned means it was from small diameter tree stave with a lot of curcature, so you flatten it out.  Bias ring orientation means if you look at what will be the back, the edges of rings are vertical, parralel to each other while at the end of the piece they area at a 45 degree angle.  Edge ring is like bias but at the end, the edges of the rings are perpendicular to the back and belly

Dave

Title: Re: i feel stupid
Post by: DanaM on October 25, 2007, 02:54:50 pm

Clear as mud eh ;D, I struggled with this also, study the diagrams it will finally click

Title: Re: i feel stupid
Post by: stiknstring on October 25, 2007, 02:59:05 pm

I think there are better explanations and diagrams in volume one if I remember correctly.  Hard to say since I am at work and don't have them with me though.

Title: Re: i feel stupid
Post by: Dane on October 25, 2007, 03:33:31 pm

Hunterman, you will have a lot of "ah-ha" moments in this hobby. I know I have, and will continue to have. Relax and it will come to you as it comes to you. This site is the best single resource you can possible find, too.

Dane

Title: Re: i feel stupid
Post by: George Tsoukalas on October 25, 2007, 04:42:48 pm

Look at the board stave from the butt end. = is plain sawn or flat sawn. || is edge grained or quarter sawn. // is rift sawn or bias grained. Jawge

Title: Re: i feel stupid
Post by: hunterman on October 25, 2007, 05:16:48 pm

clear as mud. yep  ;D

Looked at the diagrams again. now i really do feel stupid   ;D
     thanks for the help snedeker, jawge.

-cordell

Title: Re: i feel stupid
Post by: D. Tiller on October 25, 2007, 06:03:41 pm

Uhm! Arnt there only 3 books in the bible series so far? If not I will have to start saving up for the rest!

David T ;D

Title: Re: i feel stupid
Post by: DanaM on October 25, 2007, 07:33:59 pm

David #4 is in the works.  He is not talking about Vol 7 but Vol 2 ;) Hunter I am constantly amazing myself with my denisty ;D

Title: Re: i feel stupid
Post by: Dane on October 25, 2007, 09:10:37 pm

And ya know, soon there will be a Volume IV! Hurray, I can hardly wait.

Dane

Title: Re: i feel stupid
Post by: Hillbilly on October 25, 2007, 09:17:26 pm

All those terms just refer to the way the growth rings are oriented in the wood. A conventional stave is split from a log, unsawed, and the back follows one growth ring. An uncrowned stave has the crown (roundness) flattened off the back, sometimes done to small diameter staves to remove excess crown or to make it easier to back a stave with something like bamboo or a slat of hickory. Plain-sawn lumber has the rings oriented like they would be in a split stave, edge-grained boards are sawed at a 90 degree angle to the rings, and bias-sawn boards have the rings running at a diagonal angle.

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Title: Re: i feel stupid
Post by: D. Tiller on October 25, 2007, 09:38:20 pm

OOOOHHHHH!!!! The PICTURES!!!!  ;D

Title: Re: i feel stupid
Post by: snedeker on October 26, 2007, 03:13:34 pm

Wudaya mean clear as mud.  I thought my explanation was pretty concise.  The pics are a great touch though.