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Main Boards => The Bowyer's Bench => Topic started by: ztontonz on April 21, 2020, 04:22:09 PM

Title: Dual shelf thickness
Post by: ztontonz on April 21, 2020, 04:22:09 PM: I want to build a dual shelf kid bow and I am wondering what is the minimum thickness I should keep for the riser
Would 1/4” be enough with a wood riser?

I am thinking building it 10#@18”, roughly 20#@28”.
54” bow

Thanks
Title: Re: Dual shelf thickness
Post by: Flem on April 22, 2020, 01:56:47 PM: 1/4" is not much meat. It would be pretty easy to grab the limbs and snap that by hand.
Title: Re: Dual shelf thickness
Post by: monterey on April 22, 2020, 02:39:19 PM: Also depends on how deep the riser is
Title: Re: Dual shelf thickness
Post by: ztontonz on April 22, 2020, 05:30:03 PM: Otherwise I was thinking about doing a g10 I-beam, just to be safe
Title: Re: Dual shelf thickness
Post by: Bvas on April 22, 2020, 06:24:53 PM: I’m with Flem. 1/4” would bend or break quite easily.

1/4” of G10 would be good, with the rest of the handle being wood.
Title: Re: Dual shelf thickness
Post by: Flem on April 22, 2020, 06:26:57 PM: G-10 sounds like a good idea. Either that or some titanium :goldtooth:
Like Mike said, it does depend on how deep it is. But since you said it going to be a kid's bow, I doubt that riser will be more than a few inches deep. I can't think of any wood in a 1/4"X 3" dimension, that would be strong enough to last very long.
Title: Re: Dual shelf thickness
Post by: ztontonz on April 22, 2020, 06:44:35 PM: Thanks for all the advice
Title: Re: Dual shelf thickness
Post by: Mad Max on April 22, 2020, 07:35:43 PM: KISS=Keep It Simple Stupid ;)
arrow paradox
I have made glass and selfbows 3/4" wide and 1-3/4" deep, no shelf, The arrow will go around and the kids will be Happy :jumper:
50#@28"

(https://i.imgur.com/cZjcLSn.jpg)
Title: Re: Dual shelf thickness
Post by: monterey on April 22, 2020, 10:10:43 PM: Mark, the instant of seeing that bow I felt a huge urge to build one. :archer2:

Regarding the kids bow, we are only dealing with 20#. Probably doesn't need anything, but four or five layers of glass should do it.
Title: Re: Dual shelf thickness
Post by: Mad Max on April 22, 2020, 10:50:16 PM: Yeah it needs to be tough too.
Here is a side view
(https://i.imgur.com/44niSIr.jpg)
Title: Re: Dual shelf thickness
Post by: monterey on April 23, 2020, 12:09:09 AM: Nice!
Title: Re: Dual shelf thickness
Post by: Mad Max on April 24, 2020, 05:46:42 PM: ztontonz
Keep us posted on what you doing :thumbsup: :) ;)
Title: Re: Dual shelf thickness
Post by: Overspined on April 25, 2020, 09:04:57 AM: Quote from: Mad Max on April 22, 2020, 10:50:16 PM
Yeah it needs to be tough too.
Here is a side view
(https://i.imgur.com/44niSIr.jpg)

Awesome
Title: Re: Dual shelf thickness
Post by: ztontonz on April 25, 2020, 09:48:02 PM: I decided to do a fiber beam, and luckily came across a left over sheet of g10. It’s thin but I think 5 sheets will do it
Title: Re: Dual shelf thickness
Post by: ztontonz on April 25, 2020, 09:49:20 PM: Quote from: Mad Max on April 22, 2020, 10:50:16 PM
Yeah it needs to be tough too.
Here is a side view
(https://i.imgur.com/44niSIr.jpg)

Is this riser spectra? I like the look!
Title: Re: Dual shelf thickness
Post by: Mad Max on April 25, 2020, 10:01:14 PM: Dymondwood (Cocobolo) from Rosewood
really thin layers, looks more like real wood.
Title: Re: Dual shelf thickness
Post by: ztontonz on July 13, 2020, 12:35:16 AM: So here is the bow I made my son. I didn’t reduce the thickness in the window too much. The g10 probably wasn’t necessary.
Title: Re: Dual shelf thickness
Post by: ztontonz on July 13, 2020, 12:37:27 AM: -
Title: Re: Dual shelf thickness
Post by: ztontonz on July 13, 2020, 12:43:20 AM: Built it a of my D/R mold, but with a 15” handle (usually 17”) and in a 56” length.
Two thin superlams. It pulls a good 17#@28”!

I am really surprised by the bend of these limbs. I find it more balanced than the 60” or 58” I did out of the same form.

Here is the bow at 28” & 29.5”
Title: Re: Dual shelf thickness
Post by: ztontonz on July 13, 2020, 12:44:59 AM: Now I’m thinking I have to make another one in the 45# range
Title: Re: Dual shelf thickness
Post by: KenH on July 13, 2020, 07:36:58 AM: Ztontons -- really nice work.

Mad Max -- as usual, your build is fabulous.
Title: Re: Dual shelf thickness
Post by: Mad Max on July 13, 2020, 08:12:15 AM: Nice :thumbsup:

Thanks Ken
Title: Re: Dual shelf thickness
Post by: monterey on July 13, 2020, 03:11:29 PM: How about even tiller with a shelf on each end?