The frames had a primer coat yesterday and today at close of play, the sun came out and so, I put some paint on the insides of the frames. I'm going to give them a week or so for the paint to harden off completely. Then, I'll de-nib the outer faces, mask up and spray them. I'm hoping that by leaving them for a week, non of the paint will come away with the masking tape when it's removed.
With regards to the ramblings of the right/wrong paint above. The bottle green came out looking nothing like how I would have expected it. On that basis, I'm going to try a different RAL number this time which is called Blackgreen or Greenblack depending how the German is translated. I'm working on the theory that as the bottle green came out lighter than expected, if the same things happens to the blackgreen, it may not matter so much and it will have to do. The mixed tins of aerosol are something like £22 each which makes for an expensive project if they are changed too often.
The boiler comprises a wrapper formed around two rings with all soldered in place. The kit contains two brass strips that are to be formed into rings/plugs and soldered to the insides of the boiler rings. I felt that, for me, there was a chance of this not working and so, I machined down this piece of bronze tube to act as a continuous plug. It was raining today and so seemed a good idea at the time.
A couple of pictures to show the continuous plug inside the boiler prior to parting off and one all ready for soldering.