I made something similar a couple years ago and have modified it a couple times since. Finally I am happy with what I've created. I don't do a full 3' split, but kept mine at 66cm spread, whatever that equates to. I basically tried all different lengths and settled on 68cm since that is what seemed to sound the best to me.
I used 1/2" HPVC pipe, 1/2" HPVC 45* Street Connectors, PVC Caps, And A Bic Pen. I cut the desired pipe length, added the 45* connectors to each end, capped off the street connectors. Drilled a hole into each cap through the back of the HVC pipe at a 45* angle. Then I cut a Bic pen in half and inserted it through both sides where I had drilled the holes. This makes threading the 4061s very easy and also allows for a little nub to affix windscreens easily if need be.
Then I got a can of black plastic spray paint and that was it. I'll try and post some pics of mine too when I get some time.