Mechanical · CAD & Manufacturing
Injection-Molded Part Design & Simulation
Intermediate 4 weeks 30-50 hours
Design a part for molding, 3D print a prototype, and build a simple silicone mold to cast copies in resin. Measure shrinkage and warp on real casts vs your simulation.
Major
Mechanical
Focus area
CAD & Manufacturing
Total hours
30-50 hours
What you'll need
- silicone mold making rubber kit
- epoxy casting resin kit clear
- PLA 3D printer filament 1.75mm 1kg
- digital caliper 6 inch stainless steel measuring tool
- silicone mixing cups and stir sticks set
- PLA 3D printer filament 1.75mm for parts
Shop the parts on Amazon
As an Amazon Associate, I earn from qualifying purchases.
Steps
- Design a part in CAD using molding rules like draft angles and even wall thickness.
- Run a mold flow or shrinkage simulation if your CAD software offers one.
- 3D print the master part and build a two-part silicone mold around it.
- Cast several copies in resin.
- Measure shrinkage and warp on each cast with calipers and compare to your design.
- Document the process and measurements for your portfolio.
What to photograph for your portfolio
- Master part
- silicone mold
- resin casts
- measured shrinkage vs prediction
Resume bullet starters
Copy one, then swap in your own numbers.
Engineered an injection-molded part design & simulation using Injection molding principles, CAD, casting
Applied dimensional measurement to implement, test, and validate the analysis end-to-end
Skills you'll show off
Injection molding principlesCADcastingdimensional measurement