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Split & Pin Pro — Precision Model Slicing & Keying for 3D Printing
Stop wasting hours with broken manual booleans, ruined watertight meshes, and loose joints that spin or crack during assembly. Split & Pin Pro is the complete slicing and joint-generation pipeline for Blender (3.6 – 4.x+ / 5.x) engineered specifically for FDM and Resin (SLA/DLP) 3D printing.
⚡ Why Split & Pin Pro Saves You Hours on Every Print
- Zero-Fuss Organic Splitting: Slice complex sculptures following natural folds, seams, and clothes lines to render joint lines virtually invisible.
- Interactive Live 3D Pin Adjuster: Position, rotate, scale, and preview keys directly in the 3D viewport before carving.
- 9 Anti-Rotation Pin Shapes: Eliminate limb twisting with hex, D-shape, cruciform, square, and specialized mechanical geometries.
- Neodymium Magnet Sockets: Turn static figures into modular action poses with calibrated recessed magnet holes (5x2mm, 6x3mm, 8x3mm).
- Engineered Tolerances & Air Vents: Built-in air-release channels prevent the pneumatic syringe effect and glue blowouts.
- Exploded View Inspection: Inspect internal socket clearances and wall thicknesses with a single click before burning resin or filament.
✂️ 3 Flexible Cutting Workflows
A. Draw Organic Curve
Place points around the limb surface to trace natural folds (clothing hem, armor joints, belts). Supports smooth bezier tension and point slide editing so cuts blend into the sculpt.
B. 2-Click Straight Cut
Need a fast planar cut across a waist or display base? Click point 1, click point 2, orient your connector, and hit Enter. Done in 3 seconds.
C. Pin Between 2 Existing Parts
Working with third-party STLs that came pre-cut without keys? Select both meshes and Split & Pin Pro automatically creates mating keys and sockets.
📐 9 Curated Pin Geometries — Never Glue a Crooked Part
| Pin Geometry | Primary Benefit | Best Used For |
|---|---|---|
| ⬡ Hexagonal | Total rotational lock & high structural resistance. | Arms, legs, torsos, character statues. |
| ◑ D-Shape | Asymmetric key prevents 180° assembly mistakes. | Heads, masks, directional props. |
| ✚ Cruciform / Cross | Built-in corner grooves facilitate adhesive flow. | Heavy limb assemblies with CA glue. |
| ⬭ Oval | Flat aspect ratio preserves outer wall thickness. | Wings, thin weapons, sword hilts. |
| ⬜ Square & 🛑 Octagonal | Firm 90° or 45° indexed angular locking. | Bases, architectural parts, dioramas. |
| ⚪ Cylindrical | Classic profile ready for brass rods or rotation. | Swiveling parts and metal-reinforced dowels. |
🎯 Calibrated Print Tolerances (Clearance Table)
Dial in exact tolerances directly in the addon to eliminate sanding and post-processing:
-
Resin (SLA/DLP/LCD):
0.08 mm - 0.10 mm(Provides smooth hydraulic slide fit with micro-room for cyanoacrylate). -
FDM Standard (0.4mm nozzle / PLA):
0.20 mm(Default snug fit; snaps into place firmly with hand pressure). -
FDM Thermal Shrinkage (PETG / ABS / ASA):
0.25 mm - 0.30 mm(Compensates for polymer contraction). -
Neodymium Cylinders:
0.10 mm(Flush magnet insertion with optimal glue capillary grip).
💡 Integrated Pin vs. Loose Dowel (Smart FDM Printing)
Choose between Integrated Male/Female joints or Loose Dowels. By printing loose pins flat on the build plate, layer lines run along the pin axis — boosting shear strength by up to 500% compared to vertically printed pegs!
📦 What's Included & Compatibility
- Blender Compatibility: Blender 3.6 LTS, 4.0, 4.1, 4.2 LTS, 4.3 and 5.x Ready.
- Operating Systems: Windows, macOS (Intel & Apple Silicon), Linux.
- Safety Guarantee: Automatic "Keep Original" backup safeguard so your raw sculpt is never damaged.
- Lifetime Support: Free updates and access to future geometric key profiles and features.
