Ok, some decent progress now. First, the ceiling grommet installed. I've got the rod installed too but there are better pics of that.
Next, the stained ladder that I only got a half-finished terrible picture of. This, a 95% finished terrible picture for you
Still needs cutting down to length but I've been waiting for the real-world final height of the bed rather than doing it off-plan. Also needs some hooks made but I've not got round to that yet.
So I spent the morning making up angle braces. The support in the loft is a 2x4 standing on edge; because it's strongest in the direction it needs to hold the weight that way. Thing is it could then tip over...well, it couldn't because there's a steel rod passing through the middle of it but you don't want it wobbling and trying to fall over
So these should brace it against that. Counterbored for the screws so I didn't have to use foot-long screws....a bit much even for me!
The straight bits at the bottom are cross-braces to go between the joists. Partly to add strength and partly to supply a more stable surface for the beam to sit on. The joists are positioned at somewhat random spacing and are a bit twisted so it's not a flat surface. I know they're strong enough to support the load because the middle of the loft is boarded and that's taking my weight plus the usual hoarding of 'stuff' that accumulates in a loft. I left the beam at full length to spread the weight across as many joists as possible. It's not like it's going to be in the way under there.
Cross-braces, beam and angle braces installed with the rod passing through all of them.
The steel plate is cut from the same piece I made the angle plate for the bottom of the bed so it's 6mm thick. It's largely something for the flange nut to bear against (so it doesn't just dig in) and to spread the weight over a larger area....which is also why the flange nut is so over-sized. Jam nut on the top just stops it from loosening.
The joy of working in the loft is that the insulation up there - courtesy of a 90's or 00's 'Insulate your home for free' job the previous owners took up - is glass wool. Originally it had been just thrown over the top of the boarded area as well. I disposed of that because it meant you couldn't use it for storage. This stuff if you disturb it, gives off particles of glass tiny enough to float on the air...and be breathed in. I've done it once (unknowingly) and you end up almost literally coughing up a lung. That's why I've invested in looking like Artyom for the entire time I will disturb it. It's possible some or even all of this stuff predates the glass wool and isn't as evil....but I'm not taking the risk, hot and drippy though it is.
So with the rod in place and half a guard rail up, it seemed like a good time load-test it. Tested and approved!
We also got my weight as close to the floating corner as possible and then my son's as well. Not even a suggestion of a creak. Happy with that.
Last guard rail post to do today and the ladder. Rather than chisel the bottom of the slot in the posts square to match the guard rails, I routed the bottom of the guard rail round to match the slot. The top edges have just had a much smaller round-over to remove the sharp edge. I'm undecided as to what to do with the top of the slots. I could leave them as-is or I could do a 3D printed cap for the top - which I fear might look naff - or just some wooden inserts to fill the top of the slot. I think I'm leaning towards that last option...especially as it wouldn't require removing the support rod to thread something over it! *facepalm*