Returning to the provender store...
Now all the blockwork is done I've been quietly working away on the ends. Corrugated material added and the outer framework finished.
One feature I was putting off was creating the louvres. I'm sure there are other methods and that an etched brass solution would be easier (once drawn and etched) but this is what I did:
The voids were lined top and bottom with 10thou and wedges added to the base of each side.
A strip of 10thou 7mm wide and 20mm long was placed on top of each pair of wedges. A spacer of 20x40thou strip was added to each side.
The process continued layer by layer. It was now I decided I really should add the black framing as it helped firm up the louvres. No idea why the top vertical was off centre on the prototype...
Process continued until 5 louvres on each side were in place. Once everything is dry and hardened off the spacers will be trimmed back.
A shot from low down:
And head on: