Laser cut card for Kim

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Laser Cut Cryptex

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This is my laser cut cryptex. It features 28 different characters and 9 rings, giving a total possible 10.5 Trillion different combinations. I took a bit of time developing the design so that I could add some nice features. This cryptex file is laid out so that you can have any number of rings in your own design. The best feature is that the codeword is changeable, each locking ring has an outer letter ring that can be placed in any one of the 28 different positions. Once the rings are back in place the ring locking bars can added and they prevent the rings from being modified until the box is open again. It's a bit hard to explain so I made a video showing how it all work ( svg here ) It took a long time to assemble this so I lived with my initial design choices but if I were to remake it I would adjust the file to make the ring locking bars out of 6mm ply and maybe put some blind holes onto the code rings to prevent the code being brute forced.
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Wiring the Ruida Controller

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The RDC6442G controller from Ruida This is going to be quite an image heavy post describing the rewiring needed to convert between the Leetro controller and the Ruida controller. It is also pretty straight forward on the old Just Add Sharks laser cutters because all of the wires are clearly labelled. The controller was prepared in the previous step in order to make this conversion process as smooth as possible. The Leetro (Pad03) panel on the left and the Ruida panel on the right The view from inside the laser looking up at the control panel The control panel is an easy place to start, both panels have just a single cable that runs down to the controller, both panels are a very similar size, with the Ruida panel being slightly smaller underneath so it will fit in the hole left behind easily. The Pad03 panel clips into place so you'll need to reach up inside the machine to work the clips loose. The cable runs down the inside of the laser and is cable tied onto mounti...
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Leetro to Ruida Settings

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The first step towards upgrading a leetro based machine is to acquire a replacement controller. I opted for the Ruida 6442G  to make it the same as my other machine. I bought my controller through ali express from Cloudray , it's currently $266 USD for delivery to the UK it took 3 weeks to arrive and cost around £250 GBP once customs and duty had been paid on it. I would probably recommend buying it through cloudray ebay instead, it's £260 but it'll arrive within a few days. Cloudray  is my current part supplier, they've been pretty good so far. A delay suited me nicely with the Christmas rush on fractal puzzles and other products. The kit of parts as it arrived was very complete. The controller and the screen were protected with bubble wrap and anti-static bags. Other parts include two USB cables to go from the controller to the edge of the laser, one for USB sticks, one for the laptop connection. An Ethernet extension to go the the edge of the laser and al...
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