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» Trad Gang.com » Main Forums » The Bowyer's Bench » SO YA WANNA BUILD A GLASS BOW ? (Page 1)

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Author Topic: SO YA WANNA BUILD A GLASS BOW ?
kennym
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I'm going to try a complete buildalong here, bear with me....

First the form, I took a template from the kennym 62/64" bow and added an inch of reflex to the tip blending back in midlimb. Been thinking about this for about 5 years, should be long enuff...

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Now bend a fairly stiff but flexible piece around it to make sure no dips or humps. They will show up in the bow if you don't get them out. I had to work on the template a bit for one flat spot. Used a long sanding block.
Easier to sand the 1/4" template than the 1.5" thick form...

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Now to the table saw and rip a pc of 3/4" AB plywood into 2 pieces 11.75" wide(so I can get 4 out of sheet)...

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Orientation of ply to glue up so the 2 pieces work to straighten each other...

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Plywood is never as thick as they sell it to be, so we will add a pc of 1/4" in between, have a plan for being over the 1.5" , more on that when we get there......

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Now I mark out outside of both pcs of outside plywood with the form profile shape so I don't get screws in the way when I saw and rout it..

I mark 1" along bottom so the form ends up with the same amount above and below cut. The center mark goes on center. The template end is an inch past center so the router doesn't dig in at end , you have a place for the guide bearing to be ....

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Flip template to other end and mark, LOOK !!! both limbs are identical!! LOL

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There she is, sexy curves eh???

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Stay sharp, Kenny.

https://www.kennysarchery.com/

Posts: 11910 | From: Linneus , Mo. | Registered: Jan 2004  |  IP: Logged | Report this post to a Moderator
kennym
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Now for some glue and screws...

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Now before the glue sets, check for straight, this one showed straight end to end, but not corner to corner, so I clamped opposite corners down to bench a bit...

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Stay sharp, Kenny.

https://www.kennysarchery.com/

Posts: 11910 | From: Linneus , Mo. | Registered: Jan 2004  |  IP: Logged | Report this post to a Moderator
kennym
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Waiting for glue to dry is about as exciting as watching paint dry!! [laughing]

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Stay sharp, Kenny.

https://www.kennysarchery.com/

Posts: 11910 | From: Linneus , Mo. | Registered: Jan 2004  |  IP: Logged | Report this post to a Moderator
EwokArcher
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I'm so excited we are getting this build along. It'll be invaluable for lots of people. Words from the horses mouth right here. Bookmarked the link already!
Posts: 241 | From: oklahoma | Registered: Sep 2015  |  IP: Logged | Report this post to a Moderator
Buemaker
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Interesting, very good. Is your limbshape a true circle?
Bue--.

Posts: 2038 | From: Norway | Registered: Feb 2004  |  IP: Logged | Report this post to a Moderator
Crittergetter
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Looking good Kenny!!

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An elitist mentality creates discord, even among the elite!
"I went jackalope hunting but all I saw was does!"
Luck is when preparedness meets opportunity, I just need more opportunities!

Posts: 1961 | From: East Texas | Registered: Nov 2013  |  IP: Logged | Report this post to a Moderator
Roy from Pa
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What's ya making, a roller coaster?

[laughing] [jumper]

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jess stuart
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Great thanks for the build a long.
Posts: 1412 | From: Moriarty , New Mexico | Registered: Jul 2009  |  IP: Logged | Report this post to a Moderator
kennym
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The limbshape was a true circle on the original 62/64", now the tip will gain reflex on the last 9" or so... should have measured that!!

Roy, this will be a rocket launcher not a roller coaster, wont be able to shoot wood arrows out of it, they would be charcoal when they got to target....

You will be trying to bend yer boo like this soon....

Actually, I'm trying this to see if it changes performance without losing shootability.

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Stay sharp, Kenny.

https://www.kennysarchery.com/

Posts: 11910 | From: Linneus , Mo. | Registered: Jan 2004  |  IP: Logged | Report this post to a Moderator
kennym
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First one will be brown glass and something for a riser, maybe bocote.....

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Stay sharp, Kenny.

https://www.kennysarchery.com/

Posts: 11910 | From: Linneus , Mo. | Registered: Jan 2004  |  IP: Logged | Report this post to a Moderator
Bvas
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Hmmmm. Since this is a kennym design but not the original Kennym form. What shall we call it??

Kennym pro-mod [dunno] [laughing]

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Some hunt to survive; some survive to hunt

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kennym
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2017 modified class LOL

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Stay sharp, Kenny.

https://www.kennysarchery.com/

Posts: 11910 | From: Linneus , Mo. | Registered: Jan 2004  |  IP: Logged | Report this post to a Moderator
kennym
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OK here we go, sawing the form in half...

Notice I put something to hold the form up as it comes off saw, if you don't it's hard to stay on line....

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Now line up center and the line with the bottom of template, screw template on form, and check screws to be flush or slightly below...

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Clamp the form to something solid, gotta keep it still while routing the profile on her..

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Set the router depth so it cuts properly with bearing on template. If your bit won't reach clear thru, no prob, just rout once and then use freshly routed surface as template for lower portion....

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I have a curved sanding block same radius as the riser, you can also use it on the limb curves with long smooth strokes....

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Stay sharp, Kenny.

https://www.kennysarchery.com/

Posts: 11910 | From: Linneus , Mo. | Registered: Jan 2004  |  IP: Logged | Report this post to a Moderator
Mad Max
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X 2 on pro-mod

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"nothing ventured ,nothing gained"

Posts: 1801 | From: Mississippi | Registered: Oct 2013  |  IP: Logged | Report this post to a Moderator
kennym
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Now remember the form is too thick, I haven't done it this way before, but it's easier than running it thru the thickness sander a couple dozen times...
I just moved the template down the right amount and used a straight 1/2" cut bit to narrow the edge(s) up to 1.5" ...

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Stay sharp, Kenny.

https://www.kennysarchery.com/

Posts: 11910 | From: Linneus , Mo. | Registered: Jan 2004  |  IP: Logged | Report this post to a Moderator
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