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» Trad Gang.com » Main Forums » The Bowyer's Bench » Smooth on ratios (Page 3)

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Author Topic: Smooth on ratios
bamboo
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I glued one today--after your post--I poured the 2-1 right to it!

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Mike

Posts: 1348 | From: northern most jersey! | Registered: Feb 2004  |  IP: Logged | Report this post to a Moderator
Crooked Stic
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There is a suggestion section on the EA 40 web page that shows using a three step cure 2hrs. at 120-150-185. Then if you go 2-1 mix cure at room temp overnite the heat to 217 still under pressure. for those who use 2-1 mix do you do it that way?

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High on Archery.

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bamboo
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my box ramps up very close to that schedule--

IMO 217* seems high for riser woods [very near boiling!]--- beneficial for the epoxy -but.......

that process might be good w/TD limbs --not as much wood to worry about---then use a gentler bake on riser wood

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Mike

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T Folts
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I do the 2:1 ratio and still heat it. I heat to 165 +- for 4 hrs.

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US ARMY 1984-1988

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Crooked Stic
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Ok Kenny here is you some glue squeeze out. [Big Grin]
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High on Archery.

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kennym
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Waaay better'n this!!

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Stay sharp, Kenny.

https://www.kennysarchery.com/

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T Folts
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I started with the 1:1 ratio and never had a failure. I always use extra with plenty of squeeze out. I have had a few limbs show spots of starvation but I believe it is related to dry spots so I am more careful now to get enough on and even spread. I have read a lot on the 1:1 ratio and 2:1 ratio and with suggestion from a (pro) after some proto type work of the two ratio's I was convinced the 2:1 is far superior for laminated bow limbs. The bow limbs were heated and pulled hot without failure, where the 1:1 ratio failed. Enough for me to be convinced. I work in a R&D environment and use a scale for everything, no guessing. I suggest you invest in a gram scale and measure for accuracy.
My .02
T

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US ARMY 1984-1988

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bigbob2
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I use the ratio as stated before for 4 lam longbow = 72 g Part A to 58 G part B, and have in hot bow at 160 C for 8 hours, then left to cool overnight. Works for me
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kennym
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quote:
Originally posted by bigbob2:
I use the ratio as stated before for 4 lam longbow = 72 g Part A to 58 G part B, and have in hot bow at 160 C for 8 hours, then left to cool overnight. Works for me

Bob, that is 320F that's hot!!

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Stay sharp, Kenny.

https://www.kennysarchery.com/

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Roy from Pa
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Ya maken charcoal Bobby boy? [Smile]
Posts: 11328 | From: PA | Registered: Oct 2006  |  IP: Logged | Report this post to a Moderator
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