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Main Boards => PowWow => Topic started by: PrimitivePete on March 22, 2021, 08:28:04 PM

Title: Glass lines
Post by: PrimitivePete on March 22, 2021, 08:28:04 PM

Is it common for takedown bow limbs to develop lines in the glass near the bolt hole ?

Title: Re: Glass lines
Post by: Orion on March 22, 2021, 08:35:27 PM

Are you talking underside of the limb?  If so, I wouldn't say it's common, but not rare either.  It's caused by the wood and glass expanding and contracting differentially due to temp/moisture changes, which is exacerbated with particularly tight fits.  You can stop it by chamfering the holes in the limbs (relieving/countersinking the glass just a little) and seeping a little super glue into the cracks that have already developed. 

Title: Re: Glass lines
Post by: kennym on March 22, 2021, 08:36:56 PM

Also, seal the bolt and pin holes well, if the wedge picks up moisture it swells and glass doesn't change with moisture...

Title: Re: Glass lines
Post by: PrimitivePete on March 22, 2021, 08:44:56 PM

Yep on the underside of the limb, I don't feel any separation, thank you for the reply

Title: Re: Glass lines
Post by: Terry Green on March 22, 2021, 08:51:16 PM

Yes.