| 摘要 |
PROBLEM TO BE SOLVED: To provide a simple holesaw cover easily created by using a nearby article without buying any commercially sold article.SOLUTION: The holesaw cover A includes a head part 2 and a bottom part 3 provided by horizontally cutting the belly part of the container 1 of a PET bottle, the head part having a hole 2d bored in the center of a cap 2a put over a spout 2a, and the bottom part provided by boring a hole 3b in the center of a bottom plate and being fitted into the opening of the head part 2 turned upside down and fixing the opening edge of the head part 2 and the opening edge of its own. The upper part of a dual-structure bit socket 7 including an outer cylinder 7a and a shaft part 7b fitted to the chuck part 8 of an electric drill B is inserted into the hole 2c of the cap 2a of the head part 2 and the hole 3b of the bottom part 3 of the holesaw cover A, the holesaw cover A is supported on the bit saw 7 by the hole 2c of the cap 2a and the hole 3b of the bottom part 3, and in the holesaw A, a holesaw bit D is fitted to the tip of the shaft part 7b of the bit socket 7.SELECTED DRAWING: Figure 1 |
