Why is it so expensive to open a plastic mold? How to solve this problem?

Why is it so expensive to open a plastic mold? How to solve this problem?
First of all, I want to emphasize that we must think twice before we can reduce unnecessary waste.
Second, what does this look like for your use?
If it is for testing, you can consider it at the beginning of the design, first hit the board and test the structure.
It is definitely expensive to open a single mold, but the most expensive one is that you repeatedly modify it. Finally, if the mold is broken, it will be reopened. This is a big mistake.

Engineers who graduated from many pheasant universities in China or who are not well-educated or perfunctory are very fond of making a look at the mold first, and then making numerous changes.Causes unpredictable waste.
This can be seen carefully enough if he draws pictures.
Whether even the tiny screws are drawn in, look at their rigor. Then whether the simulation test will be carried out, and then whether the appearance has been confirmed and whether the function has been confirmed.
I am most afraid that if the customer sees the first board, he will change it here or suddenly change the circle into a square. The function will be modified repeatedly. Usually I will make a shape and a detailed drawing to confirm the appearance (especially for the customer. For Daxie, it is not good to communicate, so let them confirm the appearance).
Rendering software can consider using keyshot, structural split animation can consider composer, and then make a general shape through styrofoam or wood or plaster to confirm the size. For example, I am accustomed to using catia solidworks 3D software, and then the assembly design will be considered after the interference analysis of the assembly, the wall thickness and draft analysis of the plastic parts, when it comes to the force problem will be more through simulation Item simulation test. Dynamic simulation motion analysis is required when there is a rotational relationship.

Try to analyze the software first, and then do the hand. Once you have made a number of major changes, you will need to repeat the starter board confirmation. The hand board is confirmed, the structure test is no problem, and the tests that can be performed are carried out, and then opening the mold will reduce many unnecessary modifications. In addition, many engineers do not like to draw 2d maps, they open the mold, which is also taboo. Because the 2d chart can also detect a lot of design time is unreasonable. The tolerance of the drawing is crucial for reviewing the fit of the parts. It also allows the mold master or the mold factory to know what precision you are going to do, which affects the quote. The material can really save a lot of money, which is also related to your choice of plastic parts. For example, nylon or glass fiber or PPS corrosion resistant materials must use at least corrosion-resistant steel, such as NAK80 or these imported steel, domestically produced than imported It is much cheaper, but it is rarely detected. At most, it can detect hardness. Generally, the mold factory will replace the imported materials with domestic ones or replace them with cheap steel. They will be based on your output. If you can't get a lot of money in a year, they will come.
This foreign customer usually asks for the incoming inspection report, the imported material report invoice for simple protection, but it is easy to fake. When you sign a contract with them, you can guarantee the number of beer and guarantee the service life.
If you don't feel comfortable, you can buy steel by yourself, which is more troublesome.
Foreign customers with high requirements will designate a certain supplier of a certain manufacturer to buy materials. Some grades of steel will be cheaper than those of China. There is also a way to save money. If you really don't have much quantity, the quality requirements are not too strict, and there are more parts to be opened. It is only intended to make a small batch of trial production and get a small product to open the market. You can ask for it. Open the test mold and use No. 40 steel. Then they are driven into a large mold, which is very similar to the model assembled toy when playing as a child. If the materials are different, a rotary valve can be used. This will inject several parts of different materials at once.
Of course, if you are only paying attention to cheap, you can go to the price, but if you want to pay attention to speed and quality, it is better to open a mold in Dongguan, China. After all, the world's mold capital, plastic mold gathering place, various configurations, Can give you a good experience, the disadvantage is that the price is relatively high. However, looking for small and medium-sized factories there, you can talk about the price, but the big factory does not talk about the price, so when you go there to choose the mold factory, I suggest to consider my opinion.
Finally, I hope that you will consider our company: JK-mold, small and medium-sized plastic mold factory, the number of people is about 200, mainly for injection molding.
Our Alibaba is: https://plasticmolds.en.alibaba.com/
The official website is rebuilding. thank you all