How many steps do you need? Boston researchers found 4,000 steps led to benefits for older group

How many steps do you need each day? Boston researchers found 4,000 steps led to health benefits for older group ...
Hackaday

Reverse Engineering STL Files With FreeCAD

If you think about it, STL files are like PDF files. You usually create them using some other program, export them, and then expect them to print. But you rarely do serious editing on a PDF or an ...