Tuesday 16 October 2018

The Bletchley Park 'Bombe' progress

The Cells are starting to be assembled. There's a lot of work to do here. I am wondering about the wisdom of my original intent to make 32 cells. I'll see how I get on with 16 and more importantly what it will sounds like.
The laminated letter dials are only temporary and will be replaced by laser cut and engraved acrylic discs. I'm finding it a bit of a challenge using a laser cutter, but where has this wonderful machine been all my life.

I retired from teaching just as these machines started to appear in schools. I would have found it a lot more useful in a classroom context than the 3d printer which I did have.

2nd November 2018

Change of plan. I've decided to change the sound mechanism from a lamellophone to a glockenspiel. I found the lamellophone difficult to tune and to make the mechanism actuate. The glockenspiel is easier to tune using mathematical formulae and sounds closer to the metallic mechanical sound of the original bombe. It is also easier to construct and produces a more pleasing sound. Note the second resonating pipe.