Step 1: Parts
see the parts list in the image above, and read on to see how they're used.
Step 2: The Boom Arm
These fittings allow you to slip a piece of PVC pipe (we'll use 1/2 inch) right through the top of the tee. On either end, there's a sort of cap that screws on and off, and inside that cap is a little rubber ring. As you screw the cap tighter, it compresses the rubber ring around the pipe and holds it in place. We'll be using these to adjust our boom arm.
Ready for step one, now?
First you'll want to remove the rubber ring from one end of each tee - this way, you'll only need to tighten and loosen one cap in order to make adjustments. So remove the ring at one end, loosen up the other end, and slip your PVC segments into each tee.
move on to step 3 to see how we finish the arm.
Step 3: The Boom Continues
NEXT (ready?) is the mic clip. I'm positive that you can buy actual mic clips, but whilst I was at the Home Depot, I found a PVC fitting called a 'slip-snap' fitting. It's like a threaded tee joint, but the top of the tee is open (the 'snap' end?) this baby works like a charm for mics - if you can't find one, try a simple 1/2 inch tee fitting - the mic won't 'snap' in, but it should slide in all the same. See picture for assembly instructions.
Don't forget to connect your mic clip assembly to your boom arm with the 1/2 inch elbow fitting.
Step 4: The Base
To make it stand up, I screwed a 1/2 inch threaded adapter plate to a board. The pipe screws into the plate on the board, and the boom arm assembly screws onto the top of the pipe.
Step 5: Complete Success and Tips
I went through some trial and error with this stand, so here's some tips:
whatever you do for the base, make sure it's sturdy and heavy. I started out using a PVC pipe for the base (cheaper) - but the weight of the mic made it bend and tip.
Make sure all your fittings are the right diameter! Take your mic to the hardware store to measure the clips- make sure it fits. If any of your fittings are larger than 1/2 inch, make sure your pipes and connectors are also larger - everything has to be the right diameter to fit together!
Actual boom mic stands go for as cheap as $25 - I will attest that this DIY stand is rugged and fun to make, but don't spend much more on supplies than you would on an actual mic stand!
Finally, I may have gotten the names of some of these pieces wrong - please correct me if so. Have fun!