Injection Molding Services
Injection molding produces parts by forcing molten material into a mold where it cools and hardens to the mold’s shape.
eMachineShop offers cost-effective injection molding solutions whether you need a hundred pieces or a large production order.
- 50+ Materials.
- FREE Shipping in the USA.
- 100% Quality Guaranteed.
What is Plastic Injection Molding?
Plastic injection molding is a process by which granular plastic is fed from a hopper into a heated chamber where it melts and hardens to create parts.
The granules are fed into the heating chamber by a screw-type plunger where they melt. As the plunger advances, the melted plastic is forced through a nozzle into the mold cavity.
Since the mold remains relatively cold, the plastic solidifies almost immediately after the cavity is filled. After the plastic is injected, it must cool before the final part can be ejected from the mold.
- Economical for large quantities
- Can make almost any 2D or 3D shape
- Side and threaded holes moldable
- Finishing not required
- Automotive components
- Wire spools
Design Tips for Injection Molded Parts
Use uniform wall thickness
Keep wall thickness between 1/32″ and 1/10″
Use ribs to strengthen parts
Use ribs of about half the main wall thickness
Round inside and outside corners to a radius of .05″ or greater.
Add a 2-degree taper to part walls for easy release from the mold.
Appearance OptimizationTip #1
Make the joint at the mold’s parting line pronounced to make it look decorative
Appearance OptimizationTip #2
Design the gate and pins into less visible places as they can mark parts
Appearance OptimizationTip #3
Use light-colored material to hide flow patterns
Appearance OptimizationTip #4
Design surfaces to be matte or textured to hide imperfections