#topology-optimization #software for #3D design and #manufacturing, in Python. MIT X11 license.
Retr3d does #automated-improvisation to build 3D printers from e-waste: “Retr3d creates #3D printer designs based on the materials that you have access to. Retr3d can create printers form mismatch parts gathered from e-waste. All you need to do input the important the important dimensions of what you are using and Retr3d will handle all of the design changes required to make a functional printer. The designs are created using a series of Python scripts that are run in FreeCAD.” In particular, it has a focus on making sure you can use stepper motors you recover from discarded printers.
#video on the ARL’s Very Affordable Precision Projectile (VAPP) #weaponry, which turns mortar and cannon shells into cheap precision-guided munitions using a single GPS sensor and a single linear voice coil actuator to control canards mounted near the nose of a spinning shell, which is stabilized with tailfins.