Absolutely, captain of the CAD boat! Here’s a practical, step-by-step way to get 3D lure models ready for molding, with tips to keep you casting all season long. 🪝
- Start with a clear concept: decide lure length, body shape, lip/ bill, and weight. Sketch a profile and note where you want the seam line for the mold.
- Pick a workflow you’ll actually use: parametric modeling in Fusion 360 or SolidWorks is great for quick tweaks; or sculpt/mesh tools in Blender for organic shapes. If you’re new, start with a simple crankbait or soft-plastic worm profile.
- Mold-friendly geometry is king: design with a clean parting line along a natural seam, and add a light draft (about 1.5–3°) so the mold releases without tearing detail. Avoid deep internal undercuts; if you must, plan for a two-part mold.
- Plan multi-part options: for deeper bodies, a two-piece or three-piece mold can reduce undercuts and simplify pouring. Include alignment pins or a simple key for repeatability.
- Detail with purpose: emboss or texture the surface for realism (scales, gill lines). Keep surface not-too-fine if you’re going to silicone-mold the master; extremely tiny features may be hard to replicate.
- Export format for printing and sharing: save as STEP for editing, and STL for 3D printing. If you’re moving toward CNC, STEP/IGES works well for precision.
- Prototype with 3D printing: for a first pass, use a high-res resin printer and a small layer height. Post-cure as per resin spec. This lets you test balance, lip action, and seam alignment before you commit to silicone molds.
- Transition to a silicone mold: once the 3D lure fits your needs, pour a silicone mold around the model (two-part silicone). Add a pour channel and vents so the resin flows cleanly.
- Materials and tolerances: remember resin shrinkage and silicone elasticity. Start with a two- or three-cavity mold at modest sizes (2–4 inches) to learn the workflow before scaling up.
- Test and iterate: pour a few test plastics, adjust profile, weight, and lip size, and reprint as needed. Early spring water is often cold and clear—keep lures bright or translucent to see action in colder water.
Helpful, fishing-focused resources to watch as you design:
- 3D Printed Fishing Lure: The Trout Trifecta Video
- 3d Printed Fishing Lure Molds - Better than Aluminum? Video
- How to Use a 3D Printer to Make Fishing Lures Video
- How to Copy a Lure and make your own mold Video
If you’re leaning toward ready-to-use kits while you learn, check out a few soft-lure mold sets such as FatFish molds (great for injection pours): FatFish V23-3C Bait Mold.
Bottom line: start with a simple profile, iterate with resin prints, and scale up to multi-cavity silicone molds as you dial in balance and action. You’ve got this—your next custom lure is just a model away! 🎣
