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Main Boards => The Bowyer's Bench => Topic started by: pditto613 on September 04, 2021, 10:10:33 PM

Title: Current status of bear paw glass
Post by: pditto613 on September 04, 2021, 10:10:33 PM

A search of bear paw clear glass shows it comes in light and then heavy compared to Gordon’s glass. What is the current take on on the outcome of a bear paw bow.  Have to make a light weight and plan on using .030 clear bear paw

Title: Re: Current status of bear paw glass
Post by: kennym on September 05, 2021, 08:34:54 AM

Bear Paw  .040 has been up and down on weight. Right now my spine tester shows same as Gordons, I don't keep .030 so can't really say on it, but depending on which roll it comes from, if it's like the .040 it will vary. Sorry  can't be more help...

Title: Re: Current status of bear paw glass
Post by: mmattockx on September 05, 2021, 10:14:38 AM

Quote from: kennym on September 05, 2021, 08:34:54 AM

Right now my spine tester shows same as Gordons

Is your glass spine test the same as an arrow spine test? Support the test piece in two places and put a load in between the supports? How accurate have you found it for adjusting the stack to suit a new batch of glass?


Mark

Title: Re: Current status of bear paw glass
Post by: kennym on September 05, 2021, 10:36:57 AM

I tried a spine tester like you mention that I made for wood arrows but 26" is just too much span. I just screwed a block to the side of my glass cut table, and use a spring clamp on 8" of glass past the block with another block clamped on top of glass.  I used Gordons as a standard bend with the weight with marks for different sizes on side of table since Gordons is  usually pretty close .  The test seems to be pretty close to what to expect.

Title: Re: Current status of bear paw glass
Post by: pditto613 on September 05, 2021, 01:18:20 PM

Thanks Kenny

Title: Re: Current status of bear paw glass
Post by: mmattockx on September 05, 2021, 07:22:12 PM

Quote from: kennym on September 05, 2021, 10:36:57 AM

I tried a spine tester like you mention that I made for wood arrows but 26" is just too much span. I just screwed a block to the side of my glass cut table, and use a spring clamp on 8" of glass past the block with another block clamped on top of glass.  I used Gordons as a standard bend with the weight with marks for different sizes on side of table since Gordons is  usually pretty close .  The test seems to be pretty close to what to expect.

Thanks for the details, I will have to keep that in mind if I start mixing and matching my fibreglass pieces.


Mark