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» Trad Gang.com » Main Forums » The Bowyer's Bench » It's trilam season again (Page 2)

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Author Topic: It's trilam season again
BMorv
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Hey Roy, how do you taper your bamboo?
I just try to get mine 1/8" or thinner. It seems the nodes would get in the way of any efforts to taper properly like you could with lumber.

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Roy from Pa
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First I run it through my drum sander to get it close.
Once the boo is cut to the exact shape of the bow. I taper it on my 4' edge sander, one limb at a time. It's a little hairy and ya gotta watch your fingertips. Then I finish it off with a toothing plane on my work bench.

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Mad Max
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Yea, and slicing your hand open.

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"nothing ventured ,nothing gained"

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Roy from Pa
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Tim was here yesterday. Cut the bow out, then used a rasp to clean up the sides, rasp in the facets front and back, sanded the bow, then shaped the tip overlays and cut in the string grooves. It's been floor tillered and ready for the tillering tree.

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Mad Max
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Looking good Roy

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"nothing ventured ,nothing gained"

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Bvas
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Looks like Tim is doin great on his first bow. [thumbsup]
What did you use for tips? Horn?

Any progress on your bow? Or too busy taking pics and drinking 7up? [saywhat]

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Some hunt to survive; some survive to hunt

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Roy from Pa
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Buffalo horn.
I put mine on the back burner while Tim is building his.. And a little 7up... [Smile]

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BMorv
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The official start of Trilam season. I guess I need to finish tillering my trilam that I started months ago.
It's looking good. Did you use the same amount of reflex/deflex as your normal setup?
That one looks like there's more reflex.

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Roy from Pa
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I put in more reflex and less deflex. I do that by moving the mid limb post out more towards the tips.

Tim was here yesterday. He brought a case of water.. What's wrong with this guy? LOL [Smile]

Bow on the tree for the first time. The bottom limb to the left is a little stiff, we worked on that for a while.

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Bottom limb starting to come around.

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At rest after being pulled to 19 inches with the long string. It's ready for a 4 inch brace height, but I realized I gave my only longbow stringer to the grandson a couple weeks ago. DUH.. So today I will make a couple longbow stringers..

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Roy from Pa
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Video here. Top limb to the right needs to open up just a tad more.

https://www.youtube.com/watch?v=Vp8BiibrKms&feature=youtu.be

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Pat B
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Roy, do you like the full draw to have stiff, unbending outer limbs(slightly reflexed) or a full circular tiller throughout from tip to tip on a R/D style bow?

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TGMM Family of the Bow

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Roy from Pa
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Circular, Pat. I used to flip the tips with heat before glue up to get the slight reflex at full draw but it seemed to be harder to tiller that way. Almost seemed like making the bow shorter with the heat induced reflex.

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Wolftrail
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Profile looks really nice especially at full draw. It sure looks longer than 60".
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BMorv
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Man, you all don't mess around. It's looking good!
My trilam's un-braced profile looks just like that one, and I'm having trouble bringing it to low brace. It keeps popping back to it's un-braced profile with the string laying flat on the handle. I keep shortening the string but it keeps going back. Any tips?

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Roy from Pa
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That last picture is not Tims bow. I was just showing Pat what my bows profile looks like.

Benton, it could be that your bow is still way too heavy to string up. A super heavy bow will stretch the crap out of a string. Did you get it bending at floor tiller?

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