Step
Requirement & Reference Study
Fit, function, materials and constraints defined before any geometry is drawn.
Injection Molding Design Services
Plastic part design that is moldable, not just modeled.
Injection molded plastic part design for consumer products and hardware, with wall thickness, draft angles, snap-fit geometry and rib structure resolved from the concept stage instead of discovered by a mold maker.
- Draft Review
- Wall Thickness
- Tooling Direction
- Supplier CAD
Where this usually goes wrong
A part that looks finished in CAD can still sink, warp or short-fill in the mold if wall thickness, draft and gate location were not designed around the process. That usually shows up as a T1 sample that does not match the model, and a second mold revision that was not in the budget.
What you get
- Wall thickness and rib design for consistent cooling and minimal warp
- Draft angle and parting line planning
- Snap-fit, living-hinge and boss design for repeated-use durability
- Gate location and fill-path guidance for your mold maker
- Material and process recommendations
- Manufacturing-ready CAD and drawings for tooling quotes
How it works
A practical five-step workflow.
Every stage produces a clear decision, review point or manufacturing deliverable.
Step
Concept CAD & DFM Review
Parametric modeling reviewed early for moldability, machinability and assembly.
Step
Detailed Modeling & Simulation
Full assemblies, tolerancing, and FEA/thermal validation where load or heat matter.
Step
Manufacturing Drawings & GD&T
Dimensioned packages, flat patterns, BOMs and tolerance callouts a supplier can quote.
Step
Prototype & Handoff
Prototypes confirm fit and function, then final files are packaged for production.
Proof, not promises
A related project example.
The portfolio example shows how the same engineering decisions appear in completed work.
Project 07
Ergonomic Handheld Power Tool Housing
A pistol-grip handheld power tool housing built around an overmolded soft-touch grip, rotary dial, trigger button, PCB mount plate, battery pack and exploded release drawing for supplier handoff.
View portfolioCommon questions
Can you design a part specifically for a mold maker I have already chosen
Yes, designing around a specific mold maker's process, tooling constraints and preferred conventions is standard when that information is available.
Do you recommend materials, or only model geometry
Material and process recommendations are part of the deliverable, based on the part's function, cosmetic requirements and cost target.
Can you redesign an existing plastic part that is failing in the field
Yes, diagnosing why an existing molded part is cracking, warping or not sealing, and redesigning around the root cause, is a common project type.
What if my product has snap-fit assembly rather than screws
Snap-fit and living-hinge design, including cycle-life considerations so the fit does not degrade after repeated use, is a core part of this service.
Will the CAD package be ready for a T1 sample and tooling quote
Yes, the goal is a package a mold maker can quote and tool from directly, not a concept model that still needs translation.
Related options
Services that commonly work together.
Use these pages to compare scope and deliverables before combining services into one project.
Discuss this service
Share the current design problem.
I'll review the available information and suggest a practical first milestone.
- NDA Available
- Worldwide Support
- Manufacturing Ready Files
- 24 Hour Response