Plastic Injection Molding
with Mastars
Request an online quote today for custom plastic parts delivered in days.
Plastic Injection Molding
Injection molding is a high-efficiency process: molten plastic is injected into a precision mold, cooling into the final part. With minimal waste and low per-unit costs, it’s widely used for large-scale plastic production in medical, consumer goods, and automotive sectors.
Our custom injection molding offers 1-day lead times—ideal for prototypes and end-use parts. Using cost-effective aluminum molds and 200+ thermoplastics, we deliver rapid turnaround and consistent quality for diverse projects.
Common applications for plastic injection molding:
● Low-volume production
● Bridge tooling
● Pilot runs
● Functional testing and prototyping
Plastic Molding Capabilities
We don't have MOQ, only 1pcs is according to high standard to make, we pursuit the product is perfect to every customer, from 1pcs to million,we are glad to witness and grow together with our customers, that make us proud.
Our fundamental design principles for plastic injection molding incorporate key recommendations to optimize part moldability, improve aesthetic quality, and shorten production cycles.
| US | Metric | |
| Size | 18.9 in. x 29.6 in. x 8 in. | 480mm x 751mm x 203mm |
| Volume | 59 cu. in. | 966,837 cu. mm |
| Depth | 4 in. from parting line | 101mm from parting line |
| Depth | Up to 8 in. if parting line can pass through the middle of the part | Up to 203.2mm if the parting line can pass through the middle of the part |
| Projected Mold Area | 175 sq. in. | 112,903 sq. mm |
Material Options
Surface Finish Options
We don't have MOQ, only 1pcs is according to high standard to make, we pursuit the product is perfect to every customer, from 1pcs to million,we are glad to witness and grow together with our customers, that make us proud.
Draft angle requirements will vary by requested finish. Industry standard Mold-Tech finishes are also available.
| Finish | Description |
| PM-F0 | non-cosmetic, finish to Protolabs' discretion |
| PM-F1 | low-cosmetic, most toolmarks removed |
| PM-F2 | non-cosmetic, EDM permissible |
| SPI-C1 | 600 grit stone, 10-12 Ra |
| PM-T1 | SPI-C1 + light bead blast |
| PM-T2 | SPI-C1 + medium bead blast |
| SPI-B1 | 600 grit paper, 2-3 Ra |
| SPI-A2 | grade #2 diamond buff, 1-2 Ra |
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Manufacturing on Demand
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