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
AVTOGROT
In the old days (but not so far) rarely does the farm did without such household storage, like a cellar or basement. The latter name reveals its structure: deep in the ground and lined...
UNIQUE ROCKING
One of the most important components of the control system with cord model airplane rocking chair that serves as the connecting link between the cord strands and rods for the rudders....
