Step
Requirement & Reference Study
Fit, function, materials and constraints defined before any geometry is drawn.
Design for Manufacturing (DFM)
DFM review that catches problems before a factory does.
Design for Manufacturing review for injection molded plastics, CNC machined parts and sheet metal assemblies, built into the CAD process from the first model instead of added as an afterthought.
Clear scope, editable files, practical handoff
The service page explains the risk it solves, the deliverables included and the workflow used to reach a production-ready result.
Where this usually goes wrong
The most expensive place to discover a manufacturability problem is after a mold is cut or a tooling quote has already been paid for. Wall thickness that will sink or warp, draft angles that were skipped, snap fits that will not survive repeated cycling. All of it is cheap to fix in CAD and expensive to fix in steel.
What you get
- Wall thickness, draft angle and rib structure review for injection molding
- Snap-fit and living-hinge cycle-life review
- Machinability review: tool access, pocket depths, minimum radii
- Sheet metal bend allowance and flat pattern verification
- Tolerance stack-up review across mating assemblies
- A written DFM findings list with specific, actionable fixes
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 05
Smart LED Glasses
A smart glasses platform where the temple housings were reengineered with wall thickness, snap-fit clearance and rib structure tuned specifically for SLS 3D printing, so the frame stayed light and comfortable for all-day wear rather than just structurally sufficient.
View portfolioCommon questions
Can you review a design I already had someone else model?
Yes, reviewing an existing file that was not originally built with DFM in mind, and identifying what needs to change before it goes to a manufacturer, is a common starting point.
What manufacturing processes do you review for?
Injection molding, CNC machining, sheet metal fabrication and 3D printing (FDM and SLS) are the primary processes covered.
Do you only flag issues, or also fix them in CAD?
Both. A findings list on its own is not that useful without someone who can also implement the fix in the model.
How early should DFM review happen in a project?
As early as possible, ideally at the concept CAD stage rather than after detailed design is finished, since that is when changes are cheapest to make.
Can you work directly with my manufacturer during their DFM feedback round?
Yes, incorporating a manufacturer's own DFM feedback into a revised, quotable package is a normal part of this service.
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.