Don's CNC things

End-stops for the Z axis Whenever you label a design with something like "Universal"  Endstop Bracket  your asking to be taught that nothing is "Universal". Such was the case with designing Z axis end stops for my OX. I needed a micro-switch on the top and the bottom of the Z axis's travel. There was no place to mount the simple "universal" brackets up in that very busy Z axis mechanism. Since these brackets were essentially made on the fly, lots of trial and error, I do not have drawings for them. The parts were made from both .093 and .22 acrylic and bent on a shop made hot wire bender. Oh, and a dab of superglue here and there. Down End-stop The down end-stop is mounted on the upper Z channel top plate just below the Z stepper. I wanted to mount it on a stationary part of the mechanism and let the switch be activated by the moving axis. That approach eliminates wires having to move but there was no room. So I ended up moving the switch ...

Electronics Packaging I had the following goals for the DOX electronics packaging: Modular, easy to wire, troubleshoot and repair Minimize length of power wiring Visibility of the controller lights Easy access to the USB plug Fuse protection EStop provisions Easy to access screw terminals on TinyG Provision for cooling Materials & parts: Base plates: .22 acrylic from Home Depot EStop frame: .22 acrylic from Home Depot Cover: .093 acrylic from Home Depot Black standoffs: 3/4x 3/4 acrylic standoffs. Scraps from pen turning Power Supplys: came with OX kit. Controller: TinyG Wire: various mostly from strippin old power cords EStop Switch:  Red Mushroom Cap 1NO 1NC DPST Emergency Stop Push Button Switch AC 660V 10A Terminal strip: 600V 15A 6 Position Double Row Screw Terminal Strip  AC input plug:  AC 250V 10A IEC 320 C14 Panel Mount Plug Adapter Power Connector Socket Inline blade fuse holders: Wallmart auto dept Special Tools: Shop bui...