Holes in wood, plastic or duralumin parts are usually done in two steps: first, through drilling, and then chamfering with the core drill or drill bits of large diameter. I suggest a simple device that allows you to combine these operations.
A device for simultaneously drilling with chamfer:
1 — mandrel, steel 40H, 2 — cutter, 3— check, 4 — fixing screw M4
A small chisel made from a piece of drill or tap is fixed on the working tool by means of a spindle with a diamond-shaped hole. After the drill bit deepens the distance specified by the position of the cutter, the edge is removed chamfer.
And, ALIMOV, Moscow
Recommend to read
WHEN THE AREA IS SMALL
In a small room is the interior for a family of three people (Fig. 1). Bookcase 19 and the case 10 is divided the room into two parts: primary and secondary. In the main provides...
ON “PLATE” — TV
In many cases, it is convenient to mount the TV on the swivel stand. This device is easy to do on the basis of gymnastics "plate" — sports a rotating disk simulator. To turn it into a...
