Thank you.
Dobro:
My earliest soundboard had a shoe-polish lid, which was an attempt at a dobro, or resonator cone. I thought it wasn't boosting the A-string sufficiently, so I tried the wider tole-ware tray on the second soundboard as another attempt at a dobro. That didn't work at all, whether because the metal was too thick, or the metal-to-wood fit wasn't tight enough, or the gods were displeased... So I went to plain plywood. By a combination of geometry, arithmetic, superstition, and whimsy, I arrived at these two 1.5" soundholes and two 1" soundholes. I hope that distributing the soundholes will scatter the effects of whatever mistakes I've made. And putting the soundholes along the edges allows me to not worry about whether all the strings are over the hole, in case that matters, and it allows the longitudinal vibes to develop over the whole length of the sound box.
Dobro is short for Dopriskey brothers, who invented and marketed a triple resonator cone that they sold to National Instrument Company. Later they came up with a single resonator cone. Gibson owns the dobro name now, but they aren't the only ones making resonator guitars. I have no idea what either the triple or the single resonator cone actually looks like.
Someone with an Italian name starting with "B" and having three syllables came up with the original poor man's dobro in the 1990s, which was a paint-can lid inlet into the soundboard of a cigar-box guitar.
The man-cave is my basement, obviously, and I like to keep the ceiling open so I can see and reach any problems that might crop up. The joists are also handy for hanging air rifles and bows, as well as ukes, a guitar, and a possible mandolele.
There's a nice big fireplace behind me, as I took this picture. There's a desk and some filing cabinets back around a corner behind the uke. There's way too much crap down there, including about 300 running feet of books, some of which I'm sure could go.
I can't find my book of Welsh proverbs at the moment. Three tries for a Welshman, don't look for a human heart in a Saxon bosom, give a priest an inch and he'll take an ell...