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.
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Do you know. the drill bit in cutting the hole in the glass can be done in just half an hour. It will be based on the movie glass cutter fixed in the slot on the end of the steel rod....
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To purchase a digital camera, even the mirror, with a huge number of pixels, and at an affordable price, it is not a problem. Moreover, even simple and inexpensive "point and shoot"...
