In their spare time they also make defense gadgets out of carborundum.
With the ease of the old-fashioned carborundum crystal, it can change alternating current to direct; and like a vacuum tube, it can amplify faint, fluctuating currents.
At the safe, his two companions worked with a carborundum wheel, cooled it with cartons of milk.
Elton’s Work Comes Out Of The Closet Freddi Elton used to do carborundum printmaking. ( Carborundum is the stuff of sandpaper.) Then the fates and a heart valve problem intervened and suggested: How about using a method that requires less heavy physical labor?
Jan. 8, 2014 - New Haven Independent