Chapter 6 Production of Sandpaper Tools Commonly Used for Mold Making 2 2010-10-13 19:12 During the production process, attention should be paid to the stable insertion of the steel needle and the sharpness of the steel needle head. Draw out as large a circle as possible on the sandpaper. Sandpaper flying saucers are mainly used to mold the gaps and flat surfaces of jewelry workpieces. The production process is as follows:

4. Sandpaper pushing wood 1. Tools and materials: standard rectangular wooden strips (specification length 250mm × width 25mm × height 5mm), sandpaper, transparent glue, tweezers. 2. Production method: Take a whole piece of sandpaper and wrap the sandpaper layer by layer on the wooden strips, with the sanded side facing out. When making sandpaper push wood, use the tips of tweezers to make straight stripes along the sand-free edge of the wood strips for each folded surface, and then fold along the marks until the entire sandpaper is folded onto the wood strips. Secure both ends of the sandpaper with transparent glue. It should be noted that each corner of the wood strips wrapped with sandpaper is a standard right angle, and the overlap at both ends should be neat after the sandpaper wrapping is completed. Sandpaper pushers are mainly used to mold right angles, straight edges, and flat surfaces of jewelry workpieces. After the outer layer of sandpaper has been dulled, it can be peeled off. 5. Triangular sandpaper 1. Tools and materials: crane, steel needle, sandpaper, scissors. 2. Production method: Triangular sandpaper can be divided into two types: large triangular sandpaper and small triangular sandpaper. ①. Small triangular sandpaper: Use scissors to cut the sandpaper into a standard isosceles triangle of 20㎜×20㎜×9㎜. Clamp the steel needle on the motor head of the crane, with the end with the nose facing outward, exposing about About 15mm, insert the smallest end of the triangular sandpaper into the nose of the steel needle, with the sand surface facing up, slowly start the crane, and gently press the end of the rotating triangular sandpaper onto the table plug to make a small triangular sandpaper circle. . Small triangular sandpaper can replace the sandpaper ring to mold some small parts, and the effect is very good. The disadvantage is that it is not durable enough and needs to be replaced frequently when polishing. ② Large triangle sandpaper: Use scissors to cut the sandpaper into an isosceles obtuse triangle of 25㎜×25㎜×40㎜. Insert the sharp end of the triangular sandpaper into the nose of the steel needle with the sand surface facing up. Pay attention to the flat side of the triangle facing outward, slowly start the crane, press the end of the rotating triangle sandpaper onto the table plug, and tighten it. Let it automatically become a small sandpaper circle. Large triangle sandpaper and small triangle sandpaper are basically the same in use. The only difference is that large triangle sandpaper is more durable than small triangle sandpaper. 6. Shalong stick tools and materials: leather tiger (musket), scrap needle, hammer, anvil, vise. Production method: step on the wind ball, ignite the welding gun, place the scrap steel needle on the welding tile and heat it red. After it cools down naturally, use a vise to clamp the scrap needle, rely on the anvil, and place it about 8mm from the end of the steel needle. Bend, the angle is about 110°. The curvature must be straight. If the vise cannot bend it or the bend is not enough, you can use the vise to clamp the waste needle, place it on the anvil and use a hammer to bend it.

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