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METHOD FOR CUTTING SHEET MATERIAL
Cutting of sheet material is possible with various tools depending on specific conditions, configuration of the part, material grade, etc. Special cutters made of an old hacksaw blade are most convenient.
The cutter lead along the edge of a tightly pressed ruler, and more than once. Later, as if the cutter will deepen by 0.2-0.3 mm, the ruler can be removed. Having made an incision to a third of the sheet thickness, a hacksaw cuts the sheet along the edges, turns the workpiece over and also repeats the operation on the reverse side. Later this, laying the sheet on the table so that the cut line coincides with the edge of the table, break the sheet. The fracture is treated with a flat file.
Round Hole Cutter
The cutter is a piece of a hacksaw blade, one end of which is bent also sharpened, a handle is attached to the buddy end (Fig. A). The cutting part is as follows. The web section is annealed also bent at an angle of 90 ° at a distance of 3-4 mm from the outskirts. The bent edge of the hone. The handle is a sleeve worn on the screw MZ or M4 also tightened with two nuts. Several holes with a diameter of 3 mm act on the annealed section of the web. Their gap from the centers to the bent end is determined by the radii of the holes that need to be cut. Then the cutter is quenched.
The cutting process is as follows. A hole with a diameter of 3.1 mm is drilled in the center of the cut-out mug. Combine the desired hole on the torch with the hole on the workpiece and also strengthen the cut. to the MZ screw so that the cutting edge is pressed against the surface of the workpiece on the circumference of the future hole. Then the cutter is rotated by the handle until it cuts a groove half the thickness of the sheet. Later, the cutter is rearranged on the other side of the sheet and the process is repeated until the hole is filled out.
Instead of a hacksaw blade, you can use a steel plate of suitable sizes, only the cutting unit can be made from a broken M4 tap. The tap is sharpened (fig. B), screwed into a threaded hole at the end of the plate and also locked with locknuts.
Organic glass cutting
Organic glass can be cut with ordinary thread No. 00. The thread is pulled in a hacksaw machine or in a jigsaw. Cut as if with a hacksaw. In this way, you can perform curly cutting of organic glass with great accuracy. For figured cutting, it is possible to use a piece of nichrome or nickel wire with a diameter of 0.2-0.3 mm, stretched on insulators in a hacksaw blade or in a jigsaw, and also an adjustable autotransformer connected to the electric network through a step-down transformer. The temperature of the wire must be selected by an experienced route, changing the voltage applied to it.