I’ve always wanted to make custom knives. When I finally deemed my circular saw blade too dull to use, it seemed like a great opportunity. The steel used in saw blades usually has high enough carbon content to be hardened, so hang on to them! (or mail to me ). I traced my blade pattern onto the saw blade and rough cut it with an angle grinder.
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.