It holds its tune, except before I altered the cylinder the E string is wound around at the headstock it kind of cut into the string and it unwound itself, so now I have to use some new strings. That was mainly because of the temporary way I strung it though.
The proper sanding of the fretboard with nice equipment fell through, so when it's not Australia Day I will buy a long piece of sandpaper and put it down on something flat, and rub my fretboard against it for a bit. It should work well enough, but I'm going to have to redo the "El Madonna III" in the fretboard.
The acoustic amplification is somewhat higher than an unplugged electric bass but nowhere near an acoustic bass's volume. Through my amp, it doesn't sound bad but not wonderful. You can't really expect much from 20$ pickups. Once I do the fretboard I'll make a recording and put it up.
I can't say that the El Madonna III is well constructed, but so far it is lasting and I think it will last. I have always wanted to construct a well constructed instrument though, but I have neither expertise or tools. I made a dodgey guitar body a year or two ago, it went with the neck that came with a guitar I bought for 50$ (it was missing a bridge). But it was not well constructed nor was it lasting.
Thank you for taking the time to look into it and comment, and not say anything about the muffin with the face.
Love From Samuel.
P.S.
Should I enter it into the guitar of the month thing? Teehee.