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I know what a scaffold is.

It can be directly interpreted as a manual model, that is, a model made by relevant production enterprises in order to develop new products without making a prototype. Before 2000, it was basically hand-made, and now it is basically replaced by CNC, SLA and SLS.

In the process of product design, after completing the design drawings, one thing I want to do most is to know what the designed product looks like, whether the appearance is consistent with the design idea, whether the structural design is reasonable and so on. Handboard manufacturing is produced in response to this demand. Generally speaking, the hand board is one or several functional templates made according to the product appearance diagram or structure diagram without opening the mold to check the rationality of the appearance or structure.