Whether you’re an engineer looking to create your first prototype or a company who regularly orders high volumes, choosing the right process for your design can be challenging when presented with so many options. The most common methods for plastic fabrication are Injection Molding and CNC Machining. There are several factors you can take into consideration to make your choice easier, such as – quantity, cost, time, and tolerances.
Injection Molding is the process of injecting material into a mold. This is done by melting the stock material and forcing it into mold at high pressure. The part is then allowed to cool in the mold and then is ejected from the mold.
Computer Numerical Control known as CNC Machining is a process that is computer controlled. It starts with a piece of rod or sheet material and then precisely begins by removing the material layers. This process works with all plastic and metal materials, and can achieve precise tolerances with very few limitations.
When deciding what method of production to use it is important to consider the total quantity you will be purchasing for the life of the product.
CNC Machining can cost quadruple the amount of injection molding, yet it can still be cheaper to machine your plastic components. How? Because the cost to create the initial mold can range anywhere from a couple thousand to a couple hundred thousand dollars depending on the complexity. Then again, if you are planning on ordering thousands of parts per year, and are confident you will not be makings any changes (because each change requires a new mold), injection molding might be the route for you. However, before you decide on a plastic fabrication method make sure you speak with someone about both options. Feel free to contact our experts at (951) 272-9395.
If you have no time to spare CNC machining is going to be your only choice. The reason for this is because injection molding can require up to several months to manufacture a mold depending on the complexity of the design.
Most industries require a level of precision that only CNC Machining is capable of achieving. Injection molding only has the ability to reach results within .005 inches of specifications, but cnc machining is able to reach +/- .001” inches of specifications.
Deciding on a method can be complicated, and if it can’t be boiled down to quantity, cost, time and tolerance, Tamshell can help you decide which process will work best for you.
Tamshell specializes in CNC Plastic Machining, and can deliver you exceedingly quick parts with tight tolerances for a fair price. Click here to submit a RFQ or call one of our experts at (951) 272-9395.
FAQ
We know every project is unique and that questions can arise when it comes to selecting the right partner for your manufacturing needs. Our team specializes in delivering precise, reliable machining solutions tailored to the exact specifications of each client. Below, we’ve gathered answers to some of the most commonly asked questions. If you don’t see your question here, please feel free to reach out – we’re always ready to assist with any additional information you need.
Tamshell specializes in producing a diverse array of custom precision machined components tailored to our customers’ specifications. Utilizing modern, advanced 4th & 5th axis CNC mills, CNC Swiss and Swiss-screw, and CNC turning machines, we achieve tight tolerances with nearly any machinable plastic or metal material.
Our primary machining department utilizes state-of-the-art CNC machining equipment to ensure precision and quality. The secondary department complements this with a variety of conventional tools and instruments. All our machinery is backed by our specialized in-house tooling department, ensuring seamless support and efficiency.
Our machine shop excels in precision machining of a wide range of materials, with a particular expertise in plastics. We also specialize in machining aluminum, brass, bronze, and stainless steel, ensuring high-quality results for diverse applications. Our advanced equipment and skilled team enable us to meet stringent tolerances and deliver custom components tailored to our clients’ specifications. Whether working with plastics or metals, we are committed to providing exceptional craftsmanship and reliable service.
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We excel in close tolerance machining, holding tolerances as tight as +/- 0.0001″. Our capabilities include advanced 4th- and 5th-axis machining, complemented by a rigorous three-stage inspection process. This ensures burr-free parts and consistently exceeds the highest-quality finish requirements.
In short: yes, our team brings extensive expertise in the manufacturability of components and assemblies. As specialists in plastics machining, our in-house material experts will guide you in selecting the most optimal materials for your application, considering all usage factors.
Our skilled machinists are also proficient in working with various materials, including metals. We can review your 3D models and drawings, recommending any necessary changes before production begins.