Rajkot: A group of five students of Government Polytechnic, Bhuj, has developed an automatic solar-powered grass cutter. This machine will save electricity and cut pollution. This can also be ...

The machine focuses a ball lens to cut pre-programmed shapes in paper, cardboard, and plywood up to 0.4mm thick. Kayser has also incorporated pre-digital machinery by using a cam system to control the ...

[Markus Kayser] built an amazing solar powered SLS printer, but instead of using lasers and powdered plastics his machine uses the power of the sun to heat sand into complex shapes. [Markus]’ printer ...