Researchers have determined that hand stencils in Maltravieso Cave are more than 66,000 years old, suggesting that Neanderthals, not modern humans, were the world's first artists. Stencils and ...

Panel 3 in Maltravieso Cave showing 3 hand stencils (centre right, centre top and top left). One has been dated to at least 66,000 years ago and must have been made by a Neanderthal (colour enhanced).

Sometimes there are moments when an engineer has to use whatever materials they have to hand in order to complete ... the badge PCB had no solder paste stencil, and the solution was to laser ...

It’s not exactly trivial to cut them out by hand. [Juan] recently learned a new trick to make cutting solder stencils a less painful process. He uses a laser cutter to cut Mylar sheets into ...