Thursday 9th April

Worklist:
Generator building feature window.
Generator rooms lighting.
Future point actuators.
Generator building extension.
Gas holder retaining wall and tank walls.

Geoff has an electric paper cutting machine (die cutter). It's planned that the design for the glazing bars of the new feature window will be cut out of coloured self-adhesive vinyl, and applied to a clear plastic sheet. Before we get to vinyl, the first task was to cut out Geoff's design in paper, to see how it looks on the building and answer a few questions - are the beads too thick? are the panes too small to see the future engine inside? There were problems with the design file conversion and not all panels came out cleanly, but we had a reasonable panel.


We wanted to perform a decent test of the interior visibility and, therefore, needed suitable
interior lighting. Fortunately(!) Stephen had prepared a test-rig, comprising three short strings of 3 clear Christmas lights. The filament lamps had a wonderful warm glow - much more authentic than a bright white led. Five lamps were placed in the generator room and four in the gasifier area.




We were very pleased with the result of both the window and the lighting. The glazing beads didn't look too thick, and they will appear even thinner, in dark green (vinyl).

As an afterthought, the dark trim applied to the window reveal was completely removed as it didn't fit properly. The effect was surprising - the window frame looked completely different. The fragile brick reveals will need careful repair, but it will be worth it.

We then reviewed the point actuators made by Stephen and described on the previous post. It was agreed that the H&M solenoids would be replaced by the new design. Stephen will source the required servo motors and micro switches.

Stephen then moved on to the generator building extension, completing the brickwork. Laurence and Stephen then switched to preparing and fitting plasticard roof slates.

Geoff continued with the gas holder retaining wall, carving the plaster to match the stepped brickwork. The radial brick cappings have been drawn out and will be transferred onto plain plasticard using the cutting machine set to scribe rather than cut right through.


Laurence had to leave early, but snapped the other two members quietly working away....