A bit of weekendus interruptus this time, Dad - at the tender age of 70 - is getting hitched again, so Saturday evening was his stag do.... beer & curry = little forward office progress... Sunday morning, of course, being "recover from hangover" time. Fortunately the advanced age of most of the participants kept table dancing to a minimum, and usefully disguised my appallingly low tolerance for alcohol since I hardly ever drink these days. Anyway... I managed to finish off boarding up the ceiling, added noggins between almost all of the studs, added a couple more braces to hold the walls solidly to the building, and made a few more "things" to hold the ceiling boards up where the joints don't line up with the joists...
Speaking of which, this is they:

3 "brackets" made of 2x2 cheap'n'nasty wood (acquired for free from a friend) & cut on the mitre saw, stapled to some OSB offcuts. These are then stapled to the joists, thus:

And then the plasterboard below is screwed up into the flat bit, which brings the ceiling nice and level (ish) ready for a skim. The air-powered staple/nail gun is one of the most useful woodworking tools I've got... it's handy for sticking carpet tiles down to a wooden floor as well

If I recall correctly, a snip at £20 or £30 from Aldi. Or Lidl. One of them.
Last job of the day was to get the first corner wall up. I'm using OSB here, because I will be screwing lots of those little storage draw cabinet things, all full of electronic components, to the wall in this corner; this being where the electronics work will take place. Once again, the nailgun came into its own here, and the plasterboard lift usefully held it in position while the first few nails were shot in. The plasterboard will have to be screwed to the wood, the nailgun is far too vigorous for such a feeble material.

Now there really isn't a whole lot more I can get done before the insulation arrives... which may well be after Christmas now... so I can't bore you with any more woodwork pictures until then

In next
week month's exciting episode:
- How to get rockwool insulation behind an 8ft board, without falling down a 10 foot sheer drop!
- The best way to extricate oneself from a 10 foot sheer drop onto sharp and jaggy things without severing an artery!
- Making square holes for sockets in plasterboard, yeah baby
- ....and more!

PS: No spirit levels were harmed, or even consulted, during this construction project!