There are plenty of materials that you can use in making plastic molds and will enable you to create a duplication of any object. Foam rubber, latex, silicone and the likes are fairly inexpensive. Making plastic molds is not too difficult although it may take time to come up with a perfect replica. Usually, it would take you about 3-4 days from the time you make your cast, coat it with a mold compound and then having it dried.
Cracking is the topmost obstacle to your prototyping needs. As moisture escapes before it is completely dried, your mold can start building some fissures. But you can easily get rid of this headache by using less volatile plastic derivative like PVC. This is usually the plastic of choice of prototyping companies to ensure the quality of their works.
If your mold is a little bit spongy, a sealer is necessary to keep it from leaking. It would also be important that you put in protective gears whenever working with your plastic molds. Keep in mind that just a little slip can place the melted plastic on your skin and splinters can end up embedded in your eyes. It wouldn't only be painful, it can result to even deeper medical problem like infection. Wearing think gloves, eye goggles and gown will prevent any part of your skin and eyes exposed to the harmful elements of plastics.
If your plastic molds require intricate details or you need something that exudes extreme durability, you can seek the help of professional plastic molders. Through the use of CNC technology, you'll be assured that your mold could stand even extreme pressure. All you have to do is convert the object you wish to mold in a digital drawing like CAD files and your plastic molds can be easily reproduced. However, outsourcing your molding needs can be quite expensive.
The price will usually depend on the intricacies of the design and quantity of your order. Obviously, the lesser number you order the higher the price per piece. It would sometimes be more practical to get a larger order and have it in a much lower price than to have few molds and pay a stiffer price. And to make sure you get the best deal, check out different websites and ask for quotation. Each provider offers different price range so exhaust all your options to get the best end of the deal.
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