: What a misunderstanding!
: It's all my fault.
: I'm gluing some cedar, pine and one the tip aspen together. I have some epoxy
: (glue) left over from the making of the kayakframe.

: I planning to just oil the paddle when it's completed

Hi,
I would use a rougher surface for the glueing face. You want flat and true, but not necessarily perfectly smooth at the finer level. Either I would use the surface unmodified from how it comes off the saw or out of the planer, or if that is good enough (if I has hand sawing or using a band saw), then block plane or sand to an 80 - 120 grit. Lee Valley even sells a toothed plane blade for preparing surfaces for glue. I would also thicken the epoxy for glueing with microballoons and/or another thickener.

Cheers,
Bryan