The problem is, there is no data sheet. Wanting to use this chip, [David] turned to sandpaper to figure out the pinout of this chip. The best example of a product that came with this chip is a ...

It’s hard to think of a home improvement project that doesn’t involve sandpaper. Woodworkers use it to smooth and shape wood. Painters and refinishers need it to remove old finishes and polish ...

To this end, you should carefully consider which sandpaper material you use for the job. Although aluminum oxide, silicon carbide, and garnet are some of the most popular sandpaper material ...