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Re: Epoxy for Wood Repair
- To: seaint(--nospam--at)seaint.org
- Subject: Re: Epoxy for Wood Repair
- From: ASLCSE(--nospam--at)aol.com
- Date: Fri, 28 Sep 2007 18:38:14 EDT
- Cc: aluisoni(--nospam--at)socal.rr.com
In a message dated 9/28/2007 11:54:08 AM Pacific Daylight Time,
wanted to caution against the use of Polyurethane Glue, like
Glue. There is an interesting article in Fine Woodworking
Aug 2007 No. 192, that has tested various glues in a
bridle joint, which is
an open mortise and tenon joint. The tests
were done on three types
of woods and the joints were milled to
three levels of joint tightness when
dry-fit, tight, snug, and loose.
The best glue in the test was Type I
PVA glue (waterproof), like
Titebond III. The worst in the test was
polyurethane glue with
only 58% of the strength of the Type I PVA glue.
Slow set epoxy
like System Three T-88 was the second best in the
Polyurethane glues swell and foam to fill joints but they don't
strength through that glue matrix when cured, like the epoxies
To the OP: Are you going to be drawing the crack closed with
bolts? Are there going to be stresses on the cracked joint
the adhesive cures? If you are going to be drawing the
closed, I would use PVA glue and "clamp" the joint tight with
bolts and allow it to cure.
Thanks for the info LLoyd