A fixed-fee DFM review for product developers, startups, inventors, and engineering teams preparing plastic parts for injection molding.

Before you spend money on mold quotes, tooling, or production changes, 3DDFM reviews your CAD design for common injection molding risks such as wall thickness, draft angles, ribs, bosses, snap-fits, undercuts, material concerns, parting-line issues, and manufacturing readiness.

Depending on the package selected and the complexity of your part, the review may include:

• Wall thickness and thickness transitions

• Draft angle concerns

• Ribs, bosses, screw posts, and standoffs

• Snap-fit and clip features

• Holes, slots, openings, and shut-off areas

• Undercuts and tooling complexity

• Parting-line and ejection risk areas

• Sink mark and cosmetic risk areas

• Internal corners, radii, and stress concentration areas

• Material and process concerns

• Assembly and fastening features

• Supplier quote readiness

• Overall manufacturing risk level

You receive a practical engineering review, not a vague checklist.

Depending on the selected package, deliverables may include:

• PDF review report

• Annotated CAD screenshots

• Red/yellow/green risk rating

• Priority list of issues

• Recommended next steps

• Notes for supplier or mold maker discussion

• Optional follow-up consultation where included or purchased separately

To keep the review fixed-fee and focused, the following are not included unless specifically quoted separately:

• Full product redesign

• Complete CAD remodeling

• Mold design

• Tooling design

• Supplier sourcing

• Supplier management

• FEA or mold flow analysis

• Prototype testing

• Unlimited revisions

• Ongoing free consulting after delivery

If the review identifies that redesign work is needed, 3DDFM can quote that separately.

Best for:

A simple single plastic part where you want a professional first-pass manufacturability screen before moving further.

Typical use cases:

• Simple cover

• Small bracket

• Basic enclosure part

• Clip or molded component

• Early check before sending to a supplier
  
  

Includes:

• Review of one simple injection molded part

• Key wall thickness concerns

• Basic draft and molding-risk comments

• Obvious undercut or tooling complexity notes

• Annotated screenshots

• Short PDF summary

• Red/yellow/green risk rating

• Recommended next steps
  
  

Not included:

• Detailed redesign recommendations

• Full assembly review

• Multiple parts

• Complex snap-fit analysis

• Supplier RFQ preparation

• Follow-up call

Price: $495

Best for:

A more detailed review of a plastic part or small set of related features before requesting mold quotes or committing to tooling.

Typical use cases:

• Production-intent molded part

• Housing component

• Part with ribs, bosses, clips, or screw posts

• Part close to supplier quotation

• Founder or engineering team wanting a more complete review before tooling

Includes:

• Detailed review of one moderate-complexity injection molded part

• Wall thickness and transition review

• Draft angle risk review

• Ribs, bosses, standoffs, and screw-post comments

• Snap-fit or clip feature review where applicable

• Undercut and tooling-complexity notes

• Parting-line and ejection-risk comments

• Cosmetic and sink-mark risk notes

• Annotated screenshots

• PDF review report

• Prioritized issue list

• Recommended next steps

• Supplier discussion notes

Not included:

• Full CAD redesign

• Mold flow simulation

• Mold design

• Supplier sourcing

• Multiple complex parts or full product assembly

• Unlimited revisions

Price: $950-$1500

Final price depends on number of parts, complexity, file quality, level of detail required, and whether assembly/manufacturing-readiness review is included.

Best for:

Complex parts, multi-part products, assemblies, electronic enclosures, or designs with significant manufacturing, assembly, or tooling risk.

Typical use cases:

• Multi-part plastic product

• Plastic enclosure assembly

• Product with snap-fits, screw bosses, seals, clips, PCB mounting, or internal architecture

• Parts with complex tooling concerns

• Design close to expensive tooling commitment

• Client needs a more complete pre-tooling risk review

Includes:

• Review of complex injection molded part or assembly

• Manufacturing-risk assessment

• Wall thickness, draft, ribs, bosses, clips, and undercut review

• Assembly and fastening concerns

• Parting-line and tooling-risk notes

• Supplier-readiness comments

• Priority issue list

• Annotated screenshots

• Detailed PDF report

• Recommended next steps

• Optional paid follow-up meeting or included call depending on final scope

Price: $1500-$3500

Final price depends on number of parts, complexity, file quality, level of detail required, and whether assembly/manufacturing-readiness review is included.

Not sure which package fits?

If you are unsure whether your project is Small, Medium, or Large, submit the project details first with Request Custom Fixed-Fee Quote

We will confirm the correct package before work begins.

Step 1 — Choose a package

Select the review package that best matches your project.

Step 2 — Submit project information

Provide your CAD files, drawings, screenshots, material assumptions, target production quantity, and main concerns.

Step 3 — Scope confirmation

3DDFM confirms whether the selected package matches the uploaded files. If the project is more complex than the selected package, we will confirm the additional fixed fee before continuing.

Step 4 — DFM review

Your design is reviewed for injection molding risks and production-readiness concerns.

Step 5 — Receive your report

You receive a PDF report with screenshots, risk notes, and recommended next steps.

Please prepare as many of the following as possible:

• STEP file

• SolidWorks, Fusion 360, Inventor, or native CAD file if available

• 2D drawings if available

• Screenshots or reference images

• Material preference if known

• Target production quantity

• Supplier or mold maker feedback if already received

• Main concerns or questions

• Assembly files if relevant

Accepted file types may include:

STEP, SLDPRT, SLDASM, X_T, IGES, STL, DXF, PDF, ZIP, JPG, PNG.

The selected package must match the actual uploaded files.

If a Small review is purchased but the uploaded files include multiple parts, complex assemblies, or advanced features, 3DDFM will pause the review and confirm the correct fixed-fee package before continuing.

Submitting files does not expand the review scope.

3DDFM specializes in practical product design, design for manufacture, injection molding design, sheet metal design, and production-readiness support for hardware products.

The goal is not to create generic CAD comments. The goal is to help identify manufacturing risks before they become expensive tooling, supplier, or production problems.

Choose the package that best fits your project.