Braced Box Arm

thingiverse

http://www.youtube.com/watch?v=e9aaxMXra6s This is designed to be a modular arm segment, such that multiple copies can be attached together for a longer structure. Included is a hinge for a flexible arm if wanted. This is the beginning of a robot arm project. NOTE: While the STL files are included for direct printing, I suspect that others will want to download the OpenSCAD files for alteration of the object. These have easy-to-use parameters for altering the dimensions of the box and hinge. 1/11/14 -- Added new version of OpenSCAD file that allows for taller hinge pivot arms. Prior hinge would allow for about 30 degrees of angulation. Tall arm should allow about 90 degrees. 1/18/14 -- Changed hinge again. Prior hinge would allow cables to fall across axis of rotation, preventing arm from rotating in desired direction. So grooved disk added to axis. Instructions The OpenSCAD file allows for either an open format, where one can see through the object, or enclosed, with the sides filled in. The enclosed mode is much easier for my 3D printer to print out, but less aesthetic. NOTE: I am using a Mendel RepRap printer. The resulting print of the main brace box, for me, needs substantial cleanup. I use a Dremel tool with a burr bit to make the cross bars smoother.