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The large production of sand and dust from the using of an electric drill to bore a hole will make the user feeling perplexity. Especially when the user wants to make a hole in the ceiling and on the wall, the whereabouts of sand and dust will injure the eyes of the user.
Drill-cover is an exclusive accessory for the use of an electric drill. It is designed to solve the problem of sand and dust. Drill-cover is made of transparent silicon like the nipple of a feeding bottle, so it is easy to be compressed. Hence, the use of Drill-Cover can make the user working easily without taking the eye-shade and gauze mask.
Cheng Kung University
Chen Chun Tung, Kuohsiang Chen