How Much Does CNC Machining Cost?
June 20, 2024
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Injection molding is our top choice for making small plastic parts. It’s precise, repeatable, and cost-effective. Our plastic injection molding services have made a variety of parts, from small medical parts to large automotive and aerospace parts.
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LRD Prototyping | Description |
| Machine size | 50 – 3000 ton |
Mould tool material | aluminium and steel (various grades) |
Shot life | 500 to 1M+ shots (MOQ of 1) |
Mould type | single cavity, multi cavity and family mould |
Lead time | T1 samples as fast as 2 weeks |
| Materials | Description | Appearance |
| HDPE | HDPE is a low-cost thermoplastic with good impact and chemical resistance. It is used in many applications, including bottles, cutting boards, and piping. | Black, white |
| PA | PA plastic injection molding material is versatile, durable, and flexible. It can be used in many applications. Due to its high melting point, it is an excellent alternative to metal components in high-temperature environments. | Black, White, Beige |
| ABS | ABS is a popular material for injection molding. It is rigid, versatile, and resistant to chemicals and weather. It is often paired with a chrome finish to make high-quality automotive accessories. Material Reference ABS, ABS+GF, ABS+UV resistant, food grade ABS, PC+ABS | White, Black, Cream, Milky |
| PBT | PBT is strong, rigid, and resistant to thermal deformation. It is used to make sockets, switches, and handles. Material Reference PBT, PBT+GF | White to Bright Color |
| PC | PC is resistant to impact, wear, and functional testing. It is used in the medical, automotive, and telecommunications industries. Material Reference: PC, PC+GF, PC+ABS | Black, Translucent (or polished transparent) |
| PMMA | Acrylic or PMMA injection molding makes high-quality clear and transparent parts and prototypes. SPI grade A mold finish makes parts clear. | Translucent, Black |
| PP | Polypropylene (PP) is a thermoplastic material used in injection molding. It is durable, resistant to many factors, and often considered a safe option. Material Reference PP, PP+GF, food grade PP | Many colors |
| PPS | PPS is a great choice for thin-walled plastic injection moldings. It is a rigid polymer with excellent high-temperature and chemical resistance and good electrical insulation. PPS is commonly used in medical devices and surgical instruments. | Opaque white to light tan |
| Grade Size | 0.5-3mm | 3-6mm | 6-30mm | 30-120mm | 120-400mm | 400-1000mm | 1000-2000mm | 2000-4000mm |
| Fine | 0.05 | 0.05 | 0.1 | 0.15 | 0.2 | 0.3 | 0.5 | / |
| Medium | 0.1 | 0.1 | 0.2 | 0.3 | 0.5 | 0.8 | 1.2 | 2 |
| Applicable Materials | Colour | Description | |
| SPI Mould Finishes | All | / | SPI A1-3, B1-3, C1-3, D1-D3. |
| Painting | All | Black, Pantone/RAL colours | Painting adds color to a part. It makes a part look better. |
| Chrome Plating | All | Silver-gray metallic | Chrome plating makes parts more corrosion-resistant, easier to maintain, or just looks better. |
Our mold-making process has six steps:
1. Determine requirements and arrange production.
2. Provide a free, detailed production DFM report for further analysis.
3. Put the mold into production and provide the Tooling Schedule form for the whole cycle.
4. Provide a free sample to test. Put the mold into production and provide the Tooling Schedule form for the whole cycle.
Step 5: Mass production: Client confirms the samples are qualified, then proceed with the subsequent production.
Step 6: Mold saving: Production is completed and delivered after quality inspection. Mold will be cleaned and stored for the next round of parts production.
Tolerances are important in injection molding. Without proper control, assembly issues can arise. At RapidDirect, we follow the ISO 2068-c standard for molding tolerances, but can accommodate tighter specifications if needed.
No minimum order. Larger quantities = lower prices.
Once an order is placed, it takes about 35 days to make the mold and another 3-5 days to make the parts.
Our services cost more if they're bigger, more complex, made of different materials, or need extra processing. We'll give you a quote after looking at these factors.
LRD prototyping offers rapid prototyping services. This lets you test and verify your design before production.
Injection Molding vs. Vacuum Casting
Vacuum (urethane) casting offers a lower front-end cost with a higher unit price, while injection molding demands a higher front-end cost, but a significantly lower unit price. With higher volume production runs, the return on investment (ROI) will be lower with vacuum casting than with injection molding.
Rapid injection molding is used to produce low-volume (up to 100,000) quality production parts and prototypes from real materials. This process is used for prototyping, bridging, and low-volume production run parts in less time and at a reduced cost than full production molding.
Advantages of injection molding include:
Cost-effective
Highly efficient and reliable
Real production-grade materials
Flexibility (in materials and colors)
High-quality parts
