In the hand model customization processing industry, it is impossible to make no mistakes, so how should we remedy the mistakes? Generally, remedial materials can be used to fill the over cut or wrong cut places. The commonly used remedial material in the hand board industry is atomic ash or 502 glue mixed with prickly heat powder.
502 glue mixed with prickly heat powder: take an appropriate amount of prickly heat powder and add 502 glue to make it into a thin paste. Fill the adjusted material into the over cut place and wait for it to dry before processing.
The remedy premise is: the workpiece is non transparent, and the transparent workpiece is not allowed to have bonding traces. Generally, plastic parts are used for remedy. Non transparent parts include ABS, POM, PA. Transparent parts: PMMA, PC.
Atomic ash is a colloidal viscous substance, which needs to be combined with a drying agent to solidify. The price of imported atomic ash is relatively expensive, such as bentex autodody filler in Germany, which is more than 100 /250 grams; Domestic atomic ash is cheaper, with a price of more than 50 /850 grams.
In addition, during processing and solidification, the gate will be opened to a relatively thin area. After the cold iron is placed here, the temperature of all parts on the hand board is the same, and solidification can be completed at the same time.
Processing in this way can reduce the internal stress in the hand board, but there may also be shrinkage problems. Therefore, most of the solidification treatment completed at the same time is used in some materials such as cast iron with small shrinkage. Because these materials generally do not have the problem of shrinkage.
Jinan hand board processing personnel pointed out that PMMA, in particular, is also commonly known as plexiglass. Because of the particularity of material properties, it is brittle and easy to crack, and there can be no bonding traces, so special attention should be paid in the processing process. Once the cutting is too fast, the whole material may break, and then the whole hand board will be scrapped. Therefore, PMMA hand board samples are also more expensive than other hand boards.
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