Best laid plans are best ignored, I've discovered. It was going to be a quiet day working from home, no urgent work to get out, so thought I'd prepare for a good few hours on the workbench. I'd planned to have each wagon complete with a finished solebar (including shunting handles) AND to have all the washerplates fixed by the end of the day.
You can probably tell it didn't work out that way. However, I did manage to do something, at least. The picture shows 3 sets of (laminated? bonded?) solebars. It involved something I hadn't even practiced before - tinning and then soldering two thin sheets together. I couldn't exactly work out how I was going to solder them together once I'd tinned one of the surfaces - I also wasn't sure if I'd have to tin both surfaces. In the end I tinned one side, stuck it to the other with plenty of flux and then ran a blowtorch over them. Seemed to work OK, though I had to revisit one end of each of them - I have no idea why it worked out that way.
I also noted, just while I was tinning the last etch, that there are some half-etched holes on the reverse of the decorative side. Was I meant to punch out some rivets? The instructions didn't mention anything about this. It's too late now, whatever the case. This is where a prototype image would come in handy! (Ed: more of that below)
At some point over the weekend I can probably bend up the shunting handles and cut out and file all the washerplates ready for the next opportunity to get the iron out.
I still haven't found any pictures of a 'Cov B' but on Paul's Bartlett's site I did find an LNER Diagram 170 van, which looks identical to me. I'm wondering if the 'Cov B' had provision for through steam piping but otherwise was a Dia 170 van?