Keep in mind that quality control on the K40 is non-existent, and beam focus will matter, so your device may be different from mine. Further, materials such as plywood and acrylic can change from ...

How do we rate a Device? Rating a smartphone is a tedious process and a lot of parameters have to be considered before judging the overall performance of the device such as display, camera ...

This is a really clever mod for the K40 laser, and requires relatively little in the way of hardware. It might even be able to be done with leftovers from expanding a K40 out to a much bigger ...