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bowyer fiberglass question

Started by Holm-Made, April 16, 2008, 09:40:00 PM

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Holm-Made

I've been building a lot of bows this winter.  

It seems the UL clear bo tuff I got with the last 2 batches I ordered from Binghams is stiffer then what I've ordered.  The bows are coming out heavy.  I've had to drop my core thickness .015 to .020 to hit target weight.  Anyone else notice this with the UL .050 clear bo tuff?

Chad

LC

Yeah I've noticed that also. Makes one a little uneasy when he builds just a few a year. Are you using the glass with scrim? The last I ordered and recieved was several thousands thinner and figured that would make up for the weight gains but it still came out heavy!
Most people get rich by making more money than they have needs, me, I just reduced my needs!

Holm-Made

I've never used the scrim but I may switch.  The glass in the last 2 batches also seem to "splinter" more or "tear out" when I file the string groves and round edges, etc.

On a positive note it also seems clearer them some of the past stuff.  No white streaks.  

I just want to make sure my calipers didn't get out of adjustment.  Chad

LC

Well I'll know more in a few weeks. Just ordered supplies, glass with scrim, for a bow for my buddies son! Sure hope it hits weight somewhere close. I've been using the same formula for years and lately it seems I can throw those old formulas away even though Binghams says it should be the same. The last glass I got was several thousandths thinner and figured it would compenstate for weight but no luck. I built a bow for myself last winter with some exibition grade curly maple that although hit weight( made my limb lams thinner like you) had a white streak down the entire top limb. Kinda makes one sick and actually I'm not looking forward to building this one for my buddies son!
Most people get rich by making more money than they have needs, me, I just reduced my needs!


warden415

Last ones I got measured .052 instead of .050  
I guess they do vary from time to time.  They were with scrim by the way


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