Wow! It seems like an age since I last updated you fine people as to my project's progress. It was amiss of me, and I apologize whole heartedly. I know you have been waited with baited breath for over a month now, so without further ado, I present the culmination of my endeavours.
It's come together very nicely, and it even sounds okay. I've heard that most people when building their first guitar experience intonation problems, but by some miracle the tuning is fine.
The sound hole covers are screened grommets I bought from C.B. Gitty Crafter Supplies. I double-screened them with speaker material to hide the internal workings from prying eyes.
I fashioned a bridge from a metal drawer handle and a piece of stainless steel, which works up to a point. The pressure exerted by the high tension of the six strings is slowly pushing the bridge down and bending the tin lid. I'll have to keep an eye on this, and if need be, solve the problem at a later date.
Once again I apologize for my tardiness in updating you good folks as to my progress. I'll post a video of me playing "Marmite" soon. Thanks for reading.