Injection Molding

Our injection molding capabilities

Single cavity moldsMolds containing only one cavity, producing one unit per run.
Molds with side-action coresCores slide out of the part from the side before it is ejected from the mold. This allows for undercuts to be molded.
Multi-cavity moldsMultiple identical cavities are machined into the mold tool. This allows for more parts to be produced per shot, minimizing the unit costs.
Family MoldsSeveral parts are designed into the same mold tool. This allows for the minimization of tooling costs.
Insert moldingInserts are placed into the mold and molding occurs around them. This allows for inserts such as helicoils to be molded in your design.
OvermoldingPremade parts are placed into the mold to mold over them. This allows for multi-material injection molding

Our injection molding service

Our injection molding service allows you to seeminglessly move from prototyping to end-part production.

Mold materialTool Steel P20, Carbon Steel S50C
Mold storageMinimum 2 years
Mold lead timeTypically 4-5 weeks
Quality assuranceInspection reports included, full dimensional report and material certifications available upon request.
Design verification programSimilar to First Article Inspection, you will receive 2 sets of parts upon the machining of the mold to test fit before continuing with full production.
Mold remachiningWe can remachine the molds should any changes be required, changes to be reviewed on a case by case basis.
Additional technical supportDedicated CPS Mechanical Engineer for technical support.

Available materials for injection molding

All thermoplastics can be injection molded. Some thermosets and liquid silicones are also compatible with the injection molding process.

Additives and fibers

Creative Production Solutions offers additives and reinforcements as options for your plastics parts.

UV absorbersAbsorb UV radiation, slowing down the degradation of the material when used outdoors
Flame retardantsPrevent ignition and inhibits spread of fire.
Increase flexibility and promotes plasticity, reducing brittleness of the material.
ColorantsUsed to color plastics.
Carbon fibersIncrease strength, toughness, and rigidity of the material at the expense of making the material more brittle.
Glass fibersIncrease strength, toughness, and rigidity of the material at the expense of making the material more brittle. It is more flexible than carbon fibers.

Injection molded parts are not usually post-processed, but the mold itself can be finished to affect the surface finish of the molded part.

This way aesthetic needs or technical requirements can be achieved.


SPI Standard - A-1, A-2, A-3

Description - The mold is smoothed and then polished with a diamond buff, resulting in parts with a mirror-like finish.


SPI Standard - B-1, B-2, B-3

Description - The mold is smoothed with fine grit sandpaper, resulting in parts with a fine surface finish.


SPI Standard - C-1, C-2, C-3

Description - The mold is smoothed using fine stone powder, removing all machining marks.

Textured finish

SPI Standard - D-1, D-2, D-3

Description - The mold is first smoothed with fine stone powder and then sandblasted, resulting in a textured surface.

As-machined finish

Description - The mold is finished to the machinist's discretion. Tool marks may be visible.

Injection molding design guidelines

The table below summarizes the recommended and technically feasible values for the most common features encountered in injection molding.

Wall ThicknessThickness: 1 mm and 3 mm
To avoid warping and sinking, parts should be designed with the smallest possible and constant wall thickness.
Smooth transitions
3 × wall thickness difference
If wall thickness cannot be avoided, use a chamfer or fillet to make the transition as smooth as possible.
Rounded edges
Internal edges: > 0.5 × wall thickness
External edges: internal fillet + wall thickness
Add a fillet with a radius that is as large as possible to all internal and external edges.
Draft angle
For parts taller than 50 mm: increase the draft by 1° for every 25 mm
For parts with a textured finish: increase the draft by an extra 1°-2°
Add a draft to all vertical walls to make the ejection of the part easier and avoid drag marks.

Upload files and configure parts to get a quote


Creative product Solutions will be able to help you with all your manufacturing and product development need through our in-house services and knowledge. We make use of our large network of reliable supplier for any service we do not have in-house.