The guys over at 37 Signals posted this to their blog and I thought it was so awesome I had to post it to ours as well. This is the best public service announcement I have ever seen. One of the unique parts of Inventables is we are trying to help vendors communicate complex materials and components to prospective buyers at a glance. This short commercial does an incredible job at communicating without one spoken word.
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