Blackfox Training Institute, LLC | https://www.blackfox.com/blackfox-how-to-make-a-printed-circuit-board-at-home/
. Cut the copper plate for the circuit board using the cutter. Cut according to the size of the layout. Scrub the copper side of the PCB using abrasive kitchen scrubs to remove the top oxide layer and the photoresist layer
ORION Industries | http://orionindustries.com/pdfs/osj/Orion%20OSJ%202012%20-%20Fall.pdf
. Mechanical Design Engineer for one of our customers asked if we could fabricate some of the rib supports for the plane's wings. These supports are cut from specialized aircraft grade plywood
