🦋 Washtub Cello: proposal
So here is the idea: to build a cello, using as resonating chamber a washtub + a bass drum head. The construction of it will be on the principle of a gourd banjo; but with curved nut, fingerboard, and bridge. I am using an 11-gallon steel washtub, 20" across at its widest point; splurged and ordered it from Amazon -- consider this circular form the lower part of a cello body. The position of the bridge will be near the top of the soundboard, meaning the neck will need to be a bit longer than the the fingerboard* -- unlike a cello, which has a longer body. So the spot where you're bowing is at the top of the circular soundboard (the soundboard, i.e., the bottom of the washtub), midway between the end of the fingerboard and the bridge. The drum head is clamped in to the back of the body, to enclose the resonating chamber; and I'll cut a soundhole in the side of the tub. The instrument is in effect a bowed banjo-cello, with no soundpost -- a baritone rebab. I've got my fingers crossed that it will sound like anything :). I find it encouraging that a few experimental taps at the soundboard made the bucket ring like a bell!
First step is of course to have the washtub and cello components in hand, so I can mark it all out on cardboard. Local violin dealer Mo Menzel has very graciously offered to sell me a broken cello cheap, to use for parts, and I'm hoping she'll sell me a good bridge as well. In the next week or so, will swing by Board and Beam in Fairfield to pick up a hard maple board for the neck.
posted evening of Wednesday, August 8th, 2018
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*Update, just a tiny bit longer. See scale drawing post -- the length of the fingerboard plus the distance from the bridge to the edge of the soundboard is just about exactly the scale length. I'm going to extend the neck like 1/16" past where the fretboard ends.
posted afternoon of August 12th, 2018 by Jeremy Osner
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