In the hand board industry, vacuum molding is a common processing method, which is mainly used for small batch customization of plastic hand boards. Generally, it is more cost-effective to use vacuum molding for processing dozens to hundreds of plastic hand boards. The customer's requirements for the precision of the vacuum plate are very high, but the appearance of the vacuum plate is not very high. The reason why these two different situations occur is mainly because the vacuum replica hand board has its advantages and disadvantages. Let's introduce them in detail below.

真空复模手板的缺点：

Disadvantages of vacuum replica hand board:

1、缩水、易变形，由于真空复模利用的是热胀冷缩的原理，如果我们按照客户图纸上面的尺寸去做手板，等硅胶模具内的液态冷却后，势必会收缩一些，从而导致变形。一般采用真空复模的方式来做手板，做硅胶模具的时候，都要做得比尺寸上面的大一点。可即便是这样，真空复模出来的手板误差还是比较大，通常在0.2mm甚更大。

1. Shrink and easy to deform. Because the vacuum re molding uses the principle of thermal expansion and cold contraction, if we make the hand board according to the size on the customer's drawing, after the liquid in the silicone mold cools, it is bound to shrink, resulting in deformation. Generally, the hand board is made by vacuum compound mold. When making silica gel mold, it should be a little larger than the size above. But even so, the hand board error of vacuum replica is still relatively large, usually 0.2mm or more.

2、耐高温性能低，由于真空复模的材料是液态的，经过高温加热再冷却而成，因此在性能方面比不上直接才板材上加工出来的。通常CNC加工出来的手板，在耐高温方面能达到100度左右，而真空复模出来的手板，只能耐60度左右的高温。除此之外，真空复模出来的手板，在强度、硬度这些方便也比不上CNC加工出来的手板。

2. The high-temperature resistance is low. Because the material of vacuum compound mold is liquid and is heated and cooled at high temperature, it is inferior to that processed directly on the plate in terms of performance. Generally, the hand board processed by CNC can withstand about 100 degrees in terms of high temperature, while the hand board produced by vacuum re molding can only withstand about 60 degrees. In addition, the strength and hardness of the hand board made by vacuum molding are not as convenient as those made by CNC.

真空复模的优点：

Advantages of vacuum compound mold:

俗话说“一俊遮百丑”，尽管真空复模出来的手板有那么多缺点，但是它的便宜。通常用CNC加工需要几百元的手板，采用真空复模只需几十元就可以了，所以还是有很多资金不充足的人愿意采用这种方式来加工。

As the saying goes, "a handsome person conceals a hundred ugly people". Although the hand board produced by vacuum molding has so many disadvantages, it is cheap. Usually, it takes hundreds of yuan to process the hand board with CNC, and only tens of yuan to use vacuum mold. Therefore, many people with insufficient funds are willing to process it in this way.