Concrete fishing Sinker Mold Grippa 80g | SAF Concrete Series

Product detailed description

Concrete fishing Sinker Mold Grippa 80g | SAF Concrete Series is designed for repeated production of concrete fishing sinkers with an emphasis on shape accuracy and stability during use. The mold is 3D printed from PETG material and dimensioned for a concrete mix with a density of 2300 kg/m³.

Robust construction for accurate castings
The key advantage of this mold is the body design and overall rigidity. The construction is reinforced and shape-stable to help prevent unwanted flexing or deformation during normal fixing and filling. This is essential for keeping the final concrete sinker consistent in shape and dimensions.

Corner holes = flexible fixing options
The mold includes prepared corner holes / pass-through points that allow easy assembly with bolts (for example with wing nuts or star knobs). If you prefer a different workflow, the mold can also be secured with suitable clamps. With proper fixing, the mold keeps its shape and helps produce a clean, repeatable casting result.

No. 1 spring insert fit and secure anchoring in the casting
The mold is designed to work well with a stainless steel spring insert No. 1, which is placed into the mold before pouring the concrete mix. Thanks to the precise guide and correct insert positioning, the concrete casting forms a firm anchor point after curing. This ensures reliable use of the sinker and consistent results during production.

Why mold rigidity matters in concrete casting
When making concrete fishing sinkers, the mold needs to stay stable during filling and fixing. If the mold deforms while being clamped, that deformation transfers directly to the final sinker shape. A robust design makes a real difference here: more reliable filling, more accurate castings and better repeatability.

Recommendation before pouring the mix
Before filling the mold, we recommend applying a light release layer to the inner surfaces so the finished sinker can be removed more easily. In practice, anglers often use a thin film of vegetable oil or a light spray oil (for example a WD-40 type spray). Apply only a thin layer to avoid affecting surface detail.

80g weight reference note
The stated 80g weight is based on a concrete mix with a density of 2300 kg/m³. Final weight may vary slightly depending on the mix recipe, water content, compaction and curing process. If you are working with your own mix, we recommend verifying the final weight with a test casting.

SAF Concrete Series molds are a solid choice for anglers who want full control over concrete sinker production — from mix selection to final colour and surface finish. Thanks to the robust build and practical fixing system, this mold provides a reliable base for repeated workshop use. Custom weight versions are available on request, depending on your specific requirements.

→ For all detailed technical information, see the Parameters section below.

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