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Some differences between CNC processing plastic parts and CNC machining metal parts (2)
When cutting, it is recommended to open a row of small holes and then cut along the path with a saw. The advantage is that it is not easy to stick to the knife or the saw. The disadvantage is that the interface is serrated and must be processed later. This time can be cut, can be used to repair and repair the flat hanging mill, finishing machine, chamfering. At last the sand paper is grind. This is for the thick cutting surface of the plate treatment. Relatively thin, for example, 1~3 mm, you can consider the use of wire saw, or like a kind of acrylic relatively brittle, straight knife on the line. The curve of the word, remember a knife to the end, the result of one knife and one knife is very easy to split. If you don't know how to solve it perfectly, it's the same as punching and cutting off. In addition, for some very low melting points, an electric iron can be used to trim the edge. But, still that sentence, use the waste experiment first! Remember! No one knows what the hell is in your hand! Pay attention to the labor protection!!!
Welding is a very interesting thing. Now there is a plastic welding gun, you can go to a treasure search. I didn't use it, but the effect was acceptable. In this case, we must pay attention to labor protection. This job, you have to bring a mask. When the plastic is heated, the ghost knows what gas is put out. Well, PVC, you don't know what the ingredients are. As for the taste, two plastic bags are burned to know more about people. So, when the connection is needed, the special glue can be used with special glue. No general purpose is used. 502 all right? Glass glue is always there? The general use of plastic local strength requirements are not too high, small contact position, and will not be force, simple fixed, double-sided adhesive, 502. For example, a lot of advertising words use double side glue. The container type, need bearing position, first is the structure, such as a bowl shape, you said it is surrounded by the bottom walls is good? Or bottom up the walls? Do you want to pull, pull, and reinforce? Look for an aquarium and see it.