
Silicone Casting Molds: 3D Models and STL Files
This collection gathers STL files for making silicone casting molds and the parts that go with them: frames, boxes, two-part shells, jigs and masters. It is useful when you want to cast silicone, resin or another pourable material in a shape you control from your own 3D printer. Most entries are working tools rather than display pieces, so the printed result is judged by how the cast part comes out. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.
How this collection is put together
Polyzon assembles this collection from search results on the connected platforms. Repeats and models without a preview are removed, weak matches go to the end, and the rest keeps the search order. Models belong to their authors — check the terms on each model's page.
Selection rules: the Polyzon editorial team · Text updated 2026-10-14
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All models in this collection

Silikon-Gießform Rundform / Silicone Casting Mold

molds for fishing lures - stampi di esche per pesca

silicone mold casting aid

Mold for casting silicone feet (M3)

Dice vault/box + silicone mold jigs/tools for pressure chamber resin casting

Dice vault/box + silicone mold jigs/tools for resin casting

Parametric two-part mold generator for OpenSCAD

Casting molds for silicone resin gaskets

round silicone mold casting box

Concrete Benchy | Silicone Mold for Casting

Mark 5DC Geprc/Phisital Dji O4 casting mold for silicone mount

Silicone Rubber Mold Frame Pieces

Mezuzah Silicone Mold for Casting a Standard Case

Shad Hook Paddle 1 Mold for Silicone Bait Casting

OU Logo Candle Mold Master for Silicone Casting

Multi-Shape Mold for Kids Education or Casting (Silicone, Soap, Wax)

DIY D20 - Resin Casting Kit

Slime mold for silicone casting

3" softbait silicone casting mold

Pen Blank Silicone Casting Mold

box for casting silicone molds for small and flat objects

Moulage molds for silicone casting

Yurt Box 3D Master Model for Silicone Mold and Gypsum Casting
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Ghost "BOO" Candle Silicone Mold Matrix STL + Casting Housing | Master Mold for Candle Making & Halloween Business / Matriz para Molde de Silicona Vela Fantasma "BOO" STL + Carcasa Encofrado | Master Mold Velas Halloween Alta Rentabilidad

Rodin Coil Silicone Mold Maker STL 190mm | Master Mold for Silicone Casting Mold | 24 Grooves 12R + 12L | 3D Print File

Silicone Casting Mold for Jiggly Squid Earrings

Molds for silicone dice molds

Two-Part Silicone Mold Box for Casting a Sparrow Figurine (FDM Printable Mold Form)

Shoe Sole Casting Mold (TPU / PU / Silicone)
Multi-Shape Mold for Kids Education or Casting (Silicone, Soap, Wax)

Christmas tree Silicone Mold Casting Form

MOLD FOR CEMENT, GYPSUM BRICK CASTING

Small Casting Mold For Silicone Tapout Ashtray Bowl

Silicone casting bait mold

Casting Mold for a Silicone Pallet

Tea Light Candle Mold Master, Standard Size, Silicone Casting, - 3D Printable STL File

Mini brick mold for silicon casting

Apex Evo 5 hd Dji O3 + O4 RateFPV mount silicone casting mold
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Halloween Mummy Bear Candle Mold Master STL – Silicone Casting Matrix with Shell Casing | DIY High ROI / Matriz STL Oso Momia Halloween para Molde de Silicona con Encofrado | Velas Artesanales Alto Rendimiento

Carbonoid's silicone sleeve casting mold for J-Head hot-ends

E3D Volcano Silicone Casting Mold

Millenium Falcon Mold Maker

Silicone Casting Molds

Adjustable Mold Box for Silicone Molds 1.25"

Debowler Ashtray Silicone Casting Mold
«Silicone Casting Molds: 3D Models and STL Files»
The range is wider than it first looks. Some files are open frames and round boxes that simply contain poured silicone around a master, while others are closed two-part molds with a parting plane, registration keys and a pouring channel. There are also jigs and holders built for pressure or vacuum work, and masters intended for candles, concrete or small decorative shapes. Baits and lures form a group of their own, since their molds often need thin tails and flexible walls.
When you pick a file, read the author's notes before slicing. Look at the number of parts and how they align, whether the model is meant to be printed as one piece or assembled, and whether supports are needed on overhangs. Wall thickness, draft on the cavity walls and the size of the pouring opening decide how easily the mold fills and releases. The material and settings the author lists matter too, because a printed surface is copied into every cast, so layer orientation and post-processing show up in the final part. Photos of real prints and casts are the quickest way to judge a design.
If the results feel narrow, change your wording. Try mould or mold making alongside casting, and add terms for the object rather than the process: bait, lure, dice, gasket, mount, candle, soap, wax, concrete. Related ideas such as two-part mold, master, sprue, vent, registration key, jig and frame often surface files that a single phrase misses. Searching by the material you intend to pour, or by the printer type you use, also shifts the list noticeably.
Frequently asked questions
What is the difference between a one-piece and a two-part casting mold?
Can these molds be printed on a resin printer instead of a filament printer?
How do I adjust a mold for a different size part?
Which search terms find more molds like these?
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