#1
i have a delay, reverb, EQ, and noise gate that i have heard would be better in an FX loop, but my amp, the Blues Junior, doesn't have one, and i was wondering if it was worth it to make an FX loop myself.
#2
It can be done, but you better know something about electronics and electronics design. Essentially, you need to add another stage of amplification for the FX loop. If that's a tube amp and you have no unused preamp tube sections, you'll need to add another tube and supporting electronics.