Everything is printed with PLA. It is plenty durable. I printed the rings with 5 walls and 25% infill. The body was printed with 3 walls and 15% infill. Supports are not required. The parts you will need are as follows:

14- M3x8 Screws
Nylon Twine
8 Gauge Clear Vinyl (very cheap at fabric/craft stores)

Assembly is easy. Simply sandwich a piece of the vinyl between the rings, poke holes through the vinyl for the screw holes, then screw it together. Trim off the excess vinyl from around the rings. I used 2 layers of vinyl for the larger side. You could just buy thicker vinyl if you want though.

To attach the head it works best to tie one end of the twine to the loop on the drum head, then go ahead and run the twine through all the loops on the head. Set the head on top of the drum body and then route the twine loops down around the hooks on the body. Work around the drum, pulling the twine tight to stretch the vinyl in the drum head. Once the drum head is sufficiently stretched (you'll be able to hear the difference in tone), tie off the loose end of twine and then melt the ends so they don't come loose. Repeat for the other side.

You can also add a second piece of twine that runs around the outside of the drums. It can be seen in one of the pictures. This string allows you to adjust the tension on the drum head very easily. If you slide the string up, the tension goes up. If you slide the string down, the tension goes down. In order to attach this string all you have to do is tie one end off next to the middle brace of the drums. Next, tie the string around the other strings that are attached to the drum as can be seen in the picture, working your way around the drum. Once you've made it all the way around the drum, tie the end off on the other side of the middle brace. This will add a great deal of control to the tension of the drum head.