If you want to cut a round hole in the plywood or other rigid sheet material, but no jigsaw or handsaw pointed, easy to assemble witty prisposoblenie that will replace these tools. Only need two metal cores, one of which is pointed, the other sharpened like a cutting torch. Clamped in the vise at the required distance from each other, the first rod will serve as the axis on which will be pressed to rotate the plywood on top, and the second is from the bottom to cut the necessary hole.
Recommend to read
PNEUMATOS WITHOUT FICTION
For transportation of large cargo by land over distances of hundreds and thousands of miles of not-yet-invented method than the railway. It accounts for in the country about two thirds...
THE TAPE — SEWING MACHINE
Usually a polyethylene film for greenhouses connected by heating with a soldering iron or the edge of the iron. While we don't always get a strong and reliable connection, especially...
