What is described below is called "wet on wet" in America. It is also is used when taping. It speeds up the process and creates a better bond than applying wet epoxy over hardened epoxy.

: What I do for this kind of thing is mix up a small batch of epoxy,
: apply to the timber to be glued and allow few minutes for it to
: sink in, while I am waiting I thicken up the remaining epoxy in
: the cup with microfibres or whatever, and then apply the
: thickened epoxy and clamp (not too tight).

: All done in one go so to speak. Applying the unthickened resin
: first is just to ensure penetration into the timber. If you are
: really concerned about penetration a quick application of a
: hairdryer to aid penetration is possible, but I have never done
: this, and I have yet to have an epoxy joint fail.

: Try not to over clamp the joint or you will squeeze out all your
: adhesive and get glue starvation.

: Et