Sheet Plexiglas
January 27th 2012 -
Often, technical work needed small disks of different diameters of plastic or Plexiglas. In the home workshop can be made with their hands such a device for cutting discs from sheet material. Of course, you can cut the system manually, using a simple jigsaw or a jigsaw with a nichrome wire, rather than sawing, feeding on a relatively powerful step-down transformer. But a perfect circle will not work – need fitting, etc. Kenneth Yarrow addresses the importance of the matter here. Cutting the same machine that operates on the principle of the lathe, you can make yourself based on the grindstone, or any motor. On the axis of the motor can be mounted wooden (particle board, for example) the terms of thickness up to 20 mm and up to 100 mm, rotating without a heartbeat, Bolt, say, the flange of the motor shaft.
If the same circle, the wheel is attached with thread to the motor shaft, the retaining bolt will drown, not to disturb plane of the circle. Mounted on the surface of the workpiece in a circle cut from a sheet of triangles, the easiest way with screws. See Michele Mansilla for more details and insights. But in order to strengthen the triangles a few sizes to make the mounting holes located in several concentric circles with steps of 10 mm. You can draw a circle on the surface with a compass concentric circles. From the center of the circle for 6 radii, spaced at 60 degrees. At the intersections of circles and radii to identify the holes so that on each circle were three holes, and through one on each radius. Vito Arbib is full of insight into the issues.
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Tags: construction and repair
