Part Structure
Wall thickness, ribs, bosses, radii and deep features.
Engineering Before Tooling
Injection Molding Engineering
& Product Co-Design
Review product geometry, moldability and tooling requirements with Arktech through co-design, DFM, Moldflow when required and mold design engineering.
Product Co-Design
Product Co-Design for Injection Molding
Before product design is frozen, Arktech can review part geometry, assembly, appearance and material requirements with your team, and discuss design recommendations before tooling decisions are finalized.
Assembly & Function
Snap-fits, mating interfaces and critical functional areas.
Appearance
Cosmetic surfaces, texture zones and visible-surface requirements.
Material & Molding Risk
Material behavior, local mass, sink and warpage considerations.
Recommendations are reviewed with your team; final product-design approval remains with the customer.
Product Development & Application Examples
Bird Feeder Product Concept
Medical Training Device
Smart Home Device Range
Robotic Cleaning System
Coffee Machine Concept
Connected Pet Product
Ultrasound System
Outdoor Climate Product
DFM & Moldability
DFM & Moldability Review
Before mold design begins, the part is reviewed for manufacturability, mold release, gating, ejection, appearance and tooling risks.
The review connects product geometry with practical tool construction. Findings are documented so open decisions can be discussed before the mold concept is released.
Engineering Review Scope
What We Review Before Tooling
Six connected review areas help the customer and tooling team resolve product, moldability and mold-concept questions before steel cutting.
Part Geometry
- Wall thickness
- Ribs & bosses
- Corners
- Deep features
- Part structure
Draft & Undercuts
- Draft direction
- Draft angle
- Undercuts
- Side actions
- Slider / lifter requirements
Parting & Mold Opening
- Mold opening direction
- Parting line
- Shut-offs
- Core / cavity split
Gate & Filling Strategy
- Gate location
- Gate type
- Runner concept
- Appearance restrictions
- Filling considerations
Ejection & Mold Actions
- Part release
- Ejector locations
- Sliders
- Lifters
- Unscrewing requirements
Critical Dimensions & Appearance
- Critical dimensions
- Tolerance requirements
- Cosmetic surfaces
- Texture
- Assembly interfaces
Material & Tolerance
Material & Tolerance Review
Material requirements, critical dimensions and assembly fits are reviewed against the intended function, molding behavior and agreed inspection requirements.
Material Requirements
Resin grade, use conditions and material requirements supplied for the project.
Shrinkage & Dimensional Behavior
Shrinkage and dimensional considerations based on the selected material and part geometry.
Critical Dimensions & Assembly Fits
Customer drawing tolerances, mating interfaces and function-critical dimensions.
Inspection & Acceptance
Measurement references and acceptance requirements agreed for critical features.
Feasibility and open requirements are reviewed with the customer before tooling decisions are finalized.
Engineering Deliverables
What You Receive in an Engineering Review
The actual deliverables depend on project scope. Real engineering records are used to document moldability findings, tooling concepts and open decisions for customer review.
Part & Moldability Review
Tooling Concept Review
Engineering Decisions & Open Items
Moldflow When Required
Moldflow Analysis & Filling Simulation
Moldflow analysis can be used when filling behavior, pressure, weld lines, air traps, warpage or other process risks require deeper simulation.
- Fill Pattern
- Injection Pressure
- Weld Lines
- Air Traps
- Gate Location
- Runner Balance
- Packing Behavior
- Warpage Where Analyzed
Simulation scope is selected around the part, material and tooling risk. Moldflow is not presented as a mandatory step for every project.
Engineering Decisions
Typical Engineering Issues We Resolve
The examples below show how an engineering risk is translated into a review focus and an agreed direction before detailed mold design.
Local Thickness & Sink Risk
risk
Heavy rib, boss or wall intersections can create uneven cooling and visible sink.
review
Evaluate local mass, parent-wall relationships and functional load paths.
decision
Core out or rebalance the geometry while preserving required function.
Undercut & Release Risk
risk
Features outside the mold-opening direction can prevent clean part release.
review
Confirm pull direction, shut-offs and the practical mold-action options.
decision
Revise geometry or define a slider, lifter, insert or unscrewing concept.
Gate, Flow & Appearance Risk
risk
Gate position and flow direction can affect vestige, weld lines, air traps and cosmetics.
review
Review material, flow length, appearance zones and assembly requirements.
decision
Define a gating concept and use Moldflow when deeper filling analysis is required.
Engineering Workflow
From Engineering Review to Mold Design
The review sequence connects product requirements, engineering decisions and mold design release, with customer or engineering confirmation as required before steel cutting.
- 01
CAD & Requirements
- 02
Product / DFM Review
- 03
Moldflow When Required
- 04
Engineering Decisions
- 05
Mold Concept
- 06
Customer / Engineering Confirmation
- 07
Mold Design
- 08
Steel Cutting
Mold Engineering
Mold Design Engineering
After the product and tooling concept are reviewed, the engineering process moves into detailed mold design for manufacturing and validation.
Mold Layout
Core and cavity layout, parting, shut-offs and cavity arrangement
Plastic Delivery
Gate, runner and hot-runner considerations around the confirmed part
Mold Actions
Slider, lifter, unscrewing, insert and ejection mechanisms where required
Production Interface
Cooling concept, machine compatibility and trial requirements
Trial & Validation
Engineering Validation Before Production
Mold trials connect the approved engineering direction with molded samples, recorded process conditions, dimensional results and required corrections before production release.
Mold Trial
Dimensional Inspection
Molding Parameters
Mold TrialMeasure / ReviewEngineering CorrectionRe-Trial When RequiredApproval
Start an Engineering Review
What to Send for an Engineering Review
Share the available product and project information so the engineering team can understand the part, its function and the intended manufacturing requirements.
CAD Data
3D product data in a supported CAD format.
2D Drawing
Critical dimensions, tolerances and inspection requirements where available.
Material
Resin grade or material requirements.
Appearance Requirements
Texture, polish, cosmetic surfaces and visible areas.
Production Requirements
Expected quantities and production requirements when available.
Assembly / Functional Requirements
Mating parts, interfaces and critical functional areas where relevant.
Choose the Right Review
DFM Review vs Moldflow Analysis
DFM and Moldflow support different engineering decisions. Moldflow can be used where deeper simulation is required; it does not replace the broader product and tooling review.
DFM & Engineering Review
- Product moldability
- Draft & undercuts
- Parting & ejection
- Tooling concept
- Critical dimensions
- Engineering decisions
Moldflow Analysis
- Filling behavior
- Flow pattern
- Pressure trends
- Weld lines / air traps
- Packing behavior
- Warpage where analyzed
Related Capabilities
Continue into Tooling & Production
Engineering Resources
Injection Molding Design Guides
FAQ
Injection Molding Engineering FAQs
What is injection molding engineering?
Injection molding engineering connects product requirements, DFM, moldability, Moldflow when required, mold concept, detailed mold design and validation before production.
When should DFM be completed?
DFM should be completed before detailed mold design and steel cutting, while product and tooling decisions can still be reviewed efficiently.
What information is needed for an engineering review?
Provide the available 3D CAD data, 2D drawings, material, appearance, assembly, functional and production requirements.
What is reviewed before tooling release?
The scope can include geometry, draft, undercuts, parting, gating, ejection, mold actions, critical dimensions, appearance and assembly interfaces.
What is the difference between DFM and Moldflow analysis?
DFM is the broader product and tooling review. Moldflow is a process simulation used when filling, pressure, weld lines, air traps, packing or warpage risks require deeper analysis.
Is Moldflow analysis required for every mold?
No. Moldflow can be used when part geometry, material, flow length, gating or performance risk justifies deeper simulation.
Can Arktech recommend product design changes?
Arktech can review, evaluate and discuss practical geometry options with the customer. Product-design approval remains with the customer.
What happens after engineering approval?
After the agreed product and tooling decisions are confirmed, the project can move into detailed mold design, steel cutting, manufacturing and trial validation.
Does engineering support continue through mold trial?
Engineering findings can be checked against trial samples, molding parameters and dimensional results, with corrections reviewed when required before approval.
Engineering Before Tooling
Start Your Injection Molding Engineering Review
Send your CAD files, drawings, material and project requirements so the engineering team can review moldability and tooling risks before mold design begins.