Square Labyrinth

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The same basic key but squared this time instead of rounded (svg here)
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Mimic Business Card Holder

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Northants Board Game convention is right around the corner and I'm exhibiting this year so I decided I needed a better business card holder to dish out my little business tchotchke. I found a file for a mimic box that I liked and modified it to come up with this little cutie. He's a very happy chappy, just be careful of your fingers when you're taking a card.  
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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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Beam Combiner vs Head Mounted

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I've read a lot about the two different methods over the years and I've always had my own opinions about the subject but now I actually have two different lasers with two different red dot methods I feel like I can publically add something to the discussion based on my own experience. The red dot on a laser cutter is a single point of light that shines down onto the work piece to show you were the laser cutter is going to cut. It makes it a lot easier to line up scraps of material with where the laser intends to perform a cut. Because the laser head is cone shaped you can technically predict where the laser will be and some of the really cheap K40 lasers do away with the red dot entirely, but I think it's always worth paying a little bit more money to have it included. There are two distinct methods for putting a red dot on the work piece, the first involves fixing a small laser diode to the cutting head to shine directly down onto the material. Most of the...
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