LET'S RESIN Pyramid Resin Moulds Large 15 cm (5.9in) — 2 Silicone Inserts with Plastic Frame for Clear, Layered Pyramids

LET'S RESIN Pyramid Moulds are a set of two flexible silicone pyramid inserts plus a rigid plastic frame designed to cast glossy, high-transparency pyramids up to 15 cm (5.9 in) tall and wide for decor, memorial keepsakes, and craft projects.

If you want to create striking large resin pyramids—whether clear, layered, or embedded with flowers, metal, or stones—this kit gives you precise outer dimensions and a reusable silicone interior that releases finished pieces cleanly. The set includes two silicone inner moulds sized to fit the included plastic support frame, so you can pour straight into a stable structure and achieve pyramids with sharp edges, smooth faces, and glasslike clarity when using compatible epoxy resins.

How large are these pyramid moulds and what sizes can I make?

Each silicone insert is designed to form a pyramid with a 15 cm (5.9 in) height and a 15 cm x 15 cm base when used inside the plastic frame. The external mould markings help you measure and create smaller pyramids by adjusting fill level, so you can produce multiple sizes from the same insert.

• Maximum finished pyramid: 15 cm (5.9 in) height and base
• Create smaller pyramids: partial pours allow 4 cm, 6 cm, 10 cm, etc.
• Measurement markings on the outside for precise layering

What resin amount and casting technique should I use for a full-size pyramid?

Filling the entire 15 cm pyramid requires roughly 1200 g of mixed resin. For large pours we recommend dividing the cast into stages to reduce heat generation and avoid excessive exotherm that can cause bubbles or distortion.

• Estimate ~1200 g total resin for a full-volume pour
• Divide pours into layers to control heat and cure
• Use a pressure pot or vacuum chamber to reduce bubbles if available

Are these moulds easy to demold and what materials work best?

The inner moulds are made from flexible, durable silicone that lets cured epoxy release with minimal effort; the plastic frame supports accurate alignment and sharp edges. These inserts work best with casting and epoxy resins; they are not recommended for resin coatings and are not food-safe.

• Durable silicone for repeated use and easy demolding
• Best paired with casting or epoxy resins for clarity
• Not suitable for food contact or torch-based finishing

What safety tips and setup steps should I follow?

Avoid open flames near the silicone—torches can damage the material. Make sure each silicone insert sits flush inside the plastic frame so sides are even; a release spray can help when doing large-volume casts. If you plan to embed heavier objects, consider multi-stage pours to secure placement.

• Do not use a torch—flames can tear silicone
• Ensure silicone sits evenly in the plastic frame before pouring
• Consider mould release for full-volume or repeated casts

Who this is for: Crafters, resin artists, and makers who want to produce medium-to-large pyramids for home decor, memorial pieces, orgone pyramids, paperweights, or jewellery stands will find this LET'S RESIN kit useful. It suits beginners who follow layered pours and experienced artists aiming for large transparent or embedded designs. Note: this kit is intended for craft use only and is not for culinary applications.