BULKHEAD (partial) DAY TEN
Disaster! Cock up! Nul points...
The plan for making the panel for the backside of the vents was as follows =>
1) Make a shallow indentation so I could see more or less where I needed to hammer
This bit worked (and now forms a basis for plan B which will be implemented next) - just using C-clamps
You can just about see it in this picture =>
2) Next clamp one side of the metal and work from the side of the clamp with a hammer / rivet gun to the other side
(This usually works but this time it ended in a bit of a balls up)
3) Hammer time (!)
The metal work hardened a lot faster than I anticipated - I ended up having to beat seven tons of **** out of it...
...so much so I was worried I was about to bust up the hammer form. Shockingly - especially for those Bison "metal" corners - it all stayed together nicely despite my (manly) pounding...
...as always when you kick the crap out of something =>
It will eventually break.
I got rips in the far crease.
To be honest - it wasn't a shock. I was smacking it so hard I was sure I needed to consider annealing...
...so anyway - lesson learned. Tomorrow Mungo go buy new sheet metal...
...and Mungo use his hydraulic workshop press for plan B (and will not clamp the sides to let them flip up even though in his experience Mungo knows this often causes nasty ripples and creases)
To be continued