I would like to make one of those someday. Do you come up with the designs yourself or do you find plans? I would imagine if I came up with one it would sound pretty terrible.
Thanks for the comments everyone. The drum was built from a plan I just customized it a bit; sorry I don't remember where I got the plan. The drum is not readily tunable but I suppose it could be done by removing stock from the strike pads by sanding or filing.
That is my understanding, they are tuned somewhat like a xylophone, by removing wood from the bottom of each tongue. We built a xylophone using padauk for the keys, nice sounds.