This is a 3D printable injection mold for producing soft plastic lures based on a custom 300mm (12) large-format version of the legendary Frapp Geko profile — ascaly" vibrotail with delicate action originally designed in collaboration with pro angler Andrey Pitertsov. The mold features a single cavity and is optimized for FDM printing (Bambu Lab, Prusa, Creality, etc.), while also being compatible with SLA/DLP resin printers.

This 300mm version is a custom author's development — an enlarged interpretation of the Geko concept, engineered specifically for trophy pike and catfish hunting where maximum silhouette and water displacement are required. The design preserves the signature Geko characteristics: the scaly textured body with overlapping plate-like relief, the drop-shaped tail pad, and the concentrated tail action with minimal rolling. The tail pad geometry has been recalculated for this larger scale to maintain light, elegant action despite the increased body volume.

Injection Specifications:

Injector diameter: 16mm (compatible with standard hand injectors and small injection machines)

FDM Printing Recommendations:

Layer height: 0.08mm maximum for best surface quality and detail reproduction

Recommended material: PETG or any filament with a higher temperature resistance than PLA (ABS, ASA, Nylon, PET‑CF, PC, etc.)

For large models (over 5 inches / 125mm):

Wall loops (perimeters): 12–15 lines

Top solid layers: 10 layers

Bottom solid layers: 10 layers

Infill density: 10–20% (adjust as needed for strength vs. material usage)

Recommended orientation: cavity side up for best surface quality

Can be printed without supports or with minimal supports depending on orientation

For best results, print with a brim or raft to improve bed adhesion

Mold Features:

Single cavity for the custom 300mm (12") Geko-based profile

Scaly textured body with pronounced plate-like relief creating powerful hydroacoustic vibrations

Drop-shaped tail pad with recalculated geometry for the enlarged scale — preserves light action despite size

Minimal rolling action, concentrated tail play — ideal for slow retrieves and delicate presentations

Longitudinal hook grooves on back and belly for offset hook and jig head rigging

Durable, dense silicone geometry designed to withstand multiple predator attacks

Optimized runner system for proper material flow

Venting channels along the cavity for air escape during injection

Alignment pins and matching holes for consistent mold closure

Designed for use with hand injectors and small injection machines

Compatible with plastisol, soft PVC, and other soft plastic materials

Thick, durable mold geometry designed for repeated use

Important note: This is a custom author's development / inspired design based on the original Frapp Geko lure concept. Not an official FRAPP product, and not an officially produced FRAPP size. For personal use and small-batch production only.