Who knows what kinds of hand boards there are and what they are?

CNC computer palace: CNC is a computer numerical control machine tool excavated with a whole board according to the programmed program. It is cheaper in SLA and meets a variety of hand boards. SLA laser forming: SLA laser forming is formed by scanning, overlapping and curing layer by layer with ultraviolet light under the control of computer according to pre-written procedures, which is closest to the design drawings and documents, with high precision and fast single piece speed. (Disadvantages: SLA materials are easily broken, and need to be quickly supplemented by molds, which is suitable for making prototypes of multiple sets of products. Re-molding (vacuum casting): vacuum re-molding is to make a silica gel mold with the original template in a vacuum state, and then pour it with PU material in a vacuum state, thus cloning the same replica as the original template, which has better high temperature resistance, strength and hardness than the original template. This method is suitable if the customer requests to make several sets or dozens of sets. Reaction injection molding is relative to high pressure injection molding. The material it uses is still epoxy resin, and the pressure it uses can reach 30-50 kg/cm2. Therefore, the physical properties are much better than those of silica gel replica (vacuum replica) products, which can reach 80%-90% of the physical properties of injection molded products. Its characteristics are the same as those of silica gel replicas, and its dimensional accuracy is not high. Not real plastic, suitable for 5-50 batches. According to the level of scaffolding, it can be divided into appearance scaffolding, structural scaffolding and functional scaffolding. Appearance scaffolding: it mainly tests the appearance design of products, requiring exquisite appearance, accurate color and low requirements for internal treatment. Structural hand board: it mainly tests the structural rationality of products, which requires high size and relatively low appearance, especially abroad. Functional scaffold board: it is required to achieve the same appearance, structure and function as the real product, which can be understood as an unlisted finished product and is the most demanding and difficult scaffold board.