Vacuum Casting – CNC Machining Manufacturer In China-Low Volume Production

Vacuum Casting/Silicone Mold

Small batch and low-volume production

Producing silicone casts

Silicone moulded parts can be created for prototypes, in small batches, and for low-volume production. The following pieces of information will help you decide how you will want to produce your silicone parts:

Quantity – How many will you need?
Tolerance – What does it need to do?
Applications – What will it need to withstand?

3D Printing of Silicone Parts

Many projects require multiple prototypes be made quickly. If you need 1-20 simple silicone casts made in just 24-48 hours, call us and explore what 3D silicone printing by TOP Proto can do for you.

Silicone Casting

Using non-metallic moulds, high-quality silicone castings can be produced using a range of colours. For a dozen to a few hundred units, silicone casting offers a less-expensive option when compared to producing metal parts.

Silicone Moulding

When you need high-quality prototype parts made in small quantities, liquid silicone rubber (LSR) moulding is the fast and economical solution. A single silicone mould can be reused, producing up to 50 identical casts quickly saving time and money – parts are easily reproduced without additional tooling or design.

The Advantages of Vacuum Casting

Vacuum casting is an economical alternative to low-volume injection molding of plastic parts and can be used to closely simulate final molded parts or finished products. It’s benefit to make plastic prototypes with this process.

One-stop processing to make finished products with fine detail. Since it’s copy and paste process, all the pattern or texture, features on the master part directly “paste” to the product, when it is liquid material.
Lower the production cost. For the plastic part, this process is much more economical than CNC machining. It’s a perfect way to test your product design ideas like outline, color, material function, etc.
Short manufacturing time. The master pattern is made by CNC or SLA. Generally, one piece of master pattern needs less than 3 days. Silicone mold is made by the master part and only need several hours when the mold is done, the rest of job is to keep copying to get the products. So if your lead time is very tight, this is the best solution.

Vacuum casting parts we made

Vacuum Casting Materials

There are hundreds of casting polymers that are commercially available that fit the requirements for vacuum casting. They have the surface texture and hardness that you might be looking for. You can also make parts of different transparencies. Whether it’s translucent, transparent, or opaque, it all depends on how these parts will be used.

At TOP Proto, you can choose from any of the following materials:

Rubber-like polyurethanes
PE/PP-like polyurethanes
ABS-like polyurethanes

The dimensions of the finished vacuum cast parts will depend on the accuracy of the master pattern, the types of casting material, and the geometry of the design. Generally, the shrinkage rate of these finished parts is not higher than 0.15%.

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