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I started my second bow

Started by Toymaker, February 05, 2011, 11:07:00 PM

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Toymaker

Bang  :(
I think the glue (TBIII) may have let loose I don't see any imperfections in the wood. If you look you can see the center line pencil line from between the back and belly in a larger area than I would expect. What do you think? So how many bow should I expect to blow up before I don't cuss when this happens?     :mad:
Gary Slater

fujimo

you will always cuss and cry!!
thats why i like the urac- i feel that it is a bit more forgiving- i doesent mind the slight gap- so you dont over clamp- thus creating glue dry areas, and its very easy to work with.
c clamps can sometimes be a problem as pressure is very specific to the clamp site- there is not as even a pressure distribution as other methods,
like the inner tube wrap- (i use a form and elastic bands)- the clamps can lead to dry spots- especially when dealing with thin backing strips.

dont give up now- get straight back in the saddle.
g'luck
wayne.

Toymaker

Thanks Wayne,
So I shouldn't use c clamps with URAC?
How about spring clamps? Or should I band it?
I was just thinking of putting a little reflex into the next try. Maybe a couple of inches so it's straight after tillering.
Gary Slater

red hill

Oh, man! Better luck next bow.
Stan

Duffy

Boy Gary, that sure is some tough luck! It sure makes you feel bad for a while. I'll be looking for pics of your next one.

Duffy

AKmud

If you go back and look at your glue up pic you will see areas where there are 3-4" gaps between clamps.  I would bet this blow up is because of the initial glue up pressure.  Swing by Home Depot or Lowes and pick up some spring clamps to help fill the gaps.  I found them on sale one day at Lowes for $1 each and bought every one they had.  Now when I glue up I don't have more than 1/2-1" between clamps and haven't had any glue failures since.  

Looks like it had potential though....  (try it again!)  :)

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