Skin safe conductive ink from Bare Conductive makes YOU the electronic device. The way it works is a conductive ink is applied directly onto the skin allowing your skin to become electronic circuitry. When the ink is on your skin it you to interact with electronics through gesture, movement, and touch. The ink is applied with a brush, stamp or spray and is non-toxic and temporary. This is a boundary challenging material. At Inventables we've seen conductive ink before for paper but skin safe is a new arena. Check out this video to get the idea.
Coming to a CNC mill from a laser cutter, it is easy to get tripped up by the physical size of the bit when making designs. Any time you want to cut out an inside angle, you need to keep in mind that you can't reach all the way into an inside angle with a rounded bit. This comes up frequently when making furniture or any type of joinery; this post was inspired by the awesome examples of CNC joinery from this Make magazine post . Let's dive into the problem with inside corners and illustrate strategies to fix it. The problem obviously depends on the size of your bit (let's call the bit radius R). An easy way to reduce the impact of this problem without modifying your design is to simply use a smaller bit. A laser cutter suffers from this only slightly because the 'bit size' is a tiny beam of light! Fixing the inside corner problem You can modify your design to compensate for this problem. There are actually several ways to cover the red area shown abo