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Hunnert years ago I used Dynel as the last layer in a polyester resin glass fabric overlay of a planked hull. I was adding 'abrasion resistence' to my first layup job. Was impressed with the pitch, as I thought glass was pretty indestructable. Back then.
To date this, isophthalic resins had just come on the market, or just had become available at Abe Schuster's. Can't remember what the 55gal drum cost, was it $325? Outrageous!
Dynel was my first order from Defender (shows how long they have been around!) and back then was known as a polyester fabric.
Dynel disappeared for awhile, must be back with a new mother polymer.
Oh, and used Dynel with Arabol on the foredeck over raw fir plywood. Never had a problem.
Last edited by ebb; 04-30-2006 at 07:08 PM.
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I used to buy poly resin for $5 per gallon ( gas was only $0.19 gal. too ) , back in the 60's making surfboards and glassing tired old wooden Sunfish sailboards and skiffs . I even repaired my 1947 Chevy with the stuff .
The original Dynel was by Union Carbide , they quit making it years ago . The new stuff is even better . Mind you there are several versions out there , get the one with these specs;
54" wide roll
30x30, 660 denier 2-ply twisted yarn, 5 oz plain weave
The other stuff is much harder to work with and uses lots more resin per sq. yd.
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...sounds like the ticket for vacuum bagging being needs a little extra resin...
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