I don't build GPs but I do use WRC
Posted by: mornstein on Dec-20-12 8:53 PM (EST)
for most of my single blades. Almost all of my blades are sheathed with FG and epoxy.
My epoxy of choice is West. Standard resin with 207 hardener.
I toughen the shafts by coating them liberally with with the same resin/hardener. If the shafts are warmed under heat lamps prior to coating, the epoxy thins considerably as it is brushed on. The heat lamps are then turned off, allowing the shaft and epoxy to cool. This seems to draw more of the resin in and eliminates any out-gassing. A light sanding, prepares them for varnish. If a mat or "natural" look and feel is desired, the varnish is sanded to 320 or 400 grit. If a gloss finish is requested, the varnish is sanded to 1200 then buffed appropriately.
Dogpaddle Canoe Works
Custom paddles and woodstrip canoes