UV Curing Lamp for DIY PCB Solder Mask

UV_Curing_In ActionOne of the downsides of home-made CNC printed circuit boards is that a lot of the copper cladding remains and can lead to short circuits when solder strays onto the common waste area outside the formed tracks. Also, after a while it tarnishes and does not look great.

One solution to both these problems is to apply a solder mask over everything that is not meant to have solder on it, similar to professionally made boards.

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Finding Zero

Finding_ZeroAnyone who uses a CNC machine eventually realizes the importance of the Zero point. This usually happens when something goes wrong during a machining cycle, the machine needs to be reset and the current zero is lost. Fruitlessly searching for a lost zero prompted me to develop a repeatable process for finding the same zero time after time. Here’s how I do it.

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Haberdasher’s Puzzle

Haberdasher puzzle squareThe Haberdasher’s puzzle is a simple 4 piece puzzle whose parts can be assembled into a square or an equilateral triangle. Solving the puzzle is easy, but for me the beauty is in the geometric dissection used to make the parts.

A long time ago I made one of these using a ruler and compass. Now I have a CNC, I was interested to see how well a CAD drawn and machine cut set could fit together.

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ShapeOko Working Light

CNC Light onWhen machining using the ShapeOko I find that I often needed to use a torch to more clearly see what is happening the cutting area. So I decided to create a permanent LED installation with a remote switch to solve the problem.

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