Electronics Enclosure Design, Ready for Molding
SolidWorks to STEP files, thermal simulation, injection mold prep
Enclosure design is the mechanical design of the housing that holds, protects and cools a hardware product's electronics. Electuni designs enclosures in SolidWorks, starting from the PCB outline and connectors. The work includes thermal simulation and design for injection molding, for teams moving from prototype to production.
Design → Prototype → Production
Key Facts: 3D Enclosure Design
- CAD Tool
- SolidWorks
- Output
- STEP/IGES/STL
- Thermal
- CFD Simulation
- Molding
- Injection Mold Ready
- Tolerance
- 0.1mm Precision
- Materials
- ABS, PC, Aluminum
What You Get
- SolidWorks 3D enclosure models integrated with your PCB outline
- STEP, IGES and STL exports for manufacturing and 3D printing
- Thermal simulation of vent placement, heat sink sizing and airflow
- Injection-molding-ready design: draft angles, uniform wall thickness, gate placement and parting lines
How We Approach 3D Enclosure Design
Every enclosure design begins with PCB mechanical integration, ensuring perfect fit between the electronics and housing from the first prototype.
We perform thermal simulation to optimize vent placement, heat sink sizing, and airflow paths for passively or actively cooled designs.
All designs are DFM-optimized for injection molding with proper draft angles, wall thickness uniformity, gate placement, and parting line management.
How an Electuni Engagement Works
Step 1
Discovery
Requirements analysis and feasibility study.
Step 2
Architecture
System design, component selection, and risk assessment.
Step 3
Design
Schematic, layout, firmware, and mechanical CAD.
Step 4
Review
DFM/DFT checks and design review with stakeholders.
Step 5
Prototype
Board fabrication, assembly, and firmware bring-up.
Step 6
Handoff
Production files, BOM, and full documentation package.
Tools & Technologies
- SolidWorks
- STEP Export
- Thermal Simulation
- FEA Analysis
- 3D Printing
3D Enclosure Design FAQ
What files do I receive from an enclosure design project?
You receive the enclosure as 3D CAD exported in neutral formats: STEP and IGES for manufacturing and downstream CAD tools, and STL for 3D printing. Electuni designs in SolidWorks. When the design is prepared for injection molding, the model also carries the draft, wall thickness and gate decisions that the mold maker needs.
How do you make sure the PCB fits the enclosure?
Enclosure design starts from the board's mechanical data: outline, mounting holes, connector positions and component heights. A 3D model of the populated PCB is placed inside the enclosure model so clearances, port alignment and screw bosses are checked before any prototype is built.
What does design for injection molding involve?
Molded parts need draft angles on walls so they release from the tool, commonly one to two degrees. Wall thickness should be uniform to limit sink marks and warping. The design also fixes gate location, the parting line and rib geometry. These choices are made before tooling because changing a steel mold is costly.
How do I choose between ABS, polycarbonate and aluminum for an enclosure?
ABS is inexpensive, easy to mold and impact resistant, so it is common in consumer products. Polycarbonate has higher impact strength and heat resistance but costs more. Aluminum conducts heat, shields electromagnetic interference and feels rigid, but machining or die-casting raises cost. The choice depends on heat, strength, volume and budget.
When is thermal simulation needed for an electronics enclosure?
Thermal simulation is useful when components dissipate enough heat to raise internal temperature, especially in sealed housings or compact designs. A CFD model estimates temperatures and airflow so vent positions, heat sinks and fans can be sized before a prototype. Prototype temperature measurements then confirm the simulation.
Should I prototype with 3D printing or go straight to injection molding?
3D printing suits early prototypes and small quantities because it needs no tooling. Injection molding needs a mold, which costs far more up front but gives a low cost per part at volume. Many teams print prototypes to validate fit and then commit to tooling once the design is stable.