MSRaynsford

  The knife switch is housed in one of the corner columns from the box, it builds upon the corner column framework . This is the most complex of the four corners because this one is locked at the start of the game and needs to be opened before the switch can be flipped. On the original box I guess I just glued some bits together until it fitted and worked, now that I'm building ten I actually had to take a bit of time to get my files in order and I also a redesign to make the geometries work out. There are lots of individual parts that go into this corner, captive nuts at the top and bottom to mount it in the box. Another captive nut for the locking key and all the separate fingers that go into the hinge joint. The fingers on the lid were cut from 2mm ply to allow plenty of space between the 3mm fingers of the box. Solder lugs were attached to the screws of the knife switch to provide an easy way to solder wires to the switch when required. The flap that closes over the knife switc...

I really felt like this box needed to be turned on with a knife switch. With me not being so good at metal work this means finding something commercially available. All I could find in an appropriate size and material were these plastic single throw switches, which means converting them to double throw and creating some wooden bases for them. First these horrible things need to be dismantled.  Most of the pieces are screwed in but I needed to dismantle ten pairs so even that takes a while. The brass parts are riveted in place so they needed to be drilled out. The holes in the brackets also needed to be drilled out to a mm larger to accommodate the screws that I want to put in instead. Ten sets of knife switches all prepared and ready to go into the boxes. Interestingly these things need two digital inputs and tie in nicely to the current stage of the tutorials. The other interesting thing is that you need to prove you're 18 years old before you're allowed to buy knife switches ...