
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
Skiing behind a sailboat
When setting off on a long journey, a skier typically relies only on their own strength. However, it's quite possible to call on the wind for help by building a sailing tug for this...
NOT WITH WAX, AND CLAY
For better preservation of volatile liquid vials are usually recommended to clog with wax. However, it is not convenient, if the bubble has to be open often. It is better to use clay:...