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
SCREWDRIVER FOR CRACKS
In a small space is much easier to work here is a homemade t-shaped screwdriver. Take a hexagonal rod or pin (with a few wrapped on her nuts) and undercut one end, giving it the shape of...
JACK… FOR NUTS
The so-called unusual mechanism established at the Irkutsk industrial College for tightening heavily loaded threaded connections of large diameter. Anyone who has had to screw up the nut...
