I'm a new member joining the ranks.
My interest in creating Star Trek props comes from my interest in fan productions and cosplay. I find one can reliably find reasonably accurate communicators, phasers, and tricorders but theres so much more to starfleet out there.
I don't limit myself to simply copying props seen on screen, though I sometimes do that. I also create original works inspired by the various Star Trek games and toys out there.
I do my work in 3D modeling space and then run the meshes through a makerbot to turn out a physical item. I then make these items available to cosplayers.