ARTYS Liquid Silicone Rubber AB 1:1 – Mould Making Silicone (400g / 1kg, Shore A0–A40)

Make reusable silicone moulds at home

ARTYS Liquid Silicone Rubber is a two-part (A + B) silicone for making your own moulds. Mix equal parts A and B, pour it over your original, and in 4–6 hours you have a flexible mould that copies fine detail — ready to cast again and again.

Why makers choose it

• Easy 1:1 mix by weight.

• Self-degassing grades A0–A30 — no vacuum machine needed.

• Flexible and tear-resistant for repeated demoulding.

• Captures fine detail and smooth surfaces.

• Sets in 4–6 hours at room temperature.

Choose your hardness (Shore A)

• A0 — ultra soft, very stretchy.

• A5 — soft; small moulds with very fine detail.

• A10 / A15 / A20 — all-rounder; pour moulds for candles, soap and plaster.

• A30 — firm and toughest; resin, cement and cultured-stone casts.

• A40 — hard; for filling and potting. Needs vacuum degassing.

What you can make

Candle moulds, handmade soap moulds, plaster figures, resin craft and jewellery moulds, cement planters, cultured stone and clay casts.

How to use

1. Clean your original and coat it with release agent or petroleum jelly.

2. Weigh equal parts A and B (1:1). Stir slowly in one direction until fully blended.

3. Pour slowly into your mould box from one corner.

4. Leave 4–6 hours at room temperature, then peel the mould away.

Specifications

Brand: ARTYS

Type: Two-part liquid silicone rubber (A + B), translucent white

Mix ratio: A:B = 1:1

Hardness: Shore A0, A5, A10, A15, A20, A30, A40 (choose one)

Set size: 400g set (A + B = 400g) or 1kg set (A + B = 1kg)

Setting time: 4–6 hours at room temperature

Shelf life: 12 months

FAQ

Q: Do I need a vacuum machine?

A: Not for A0–A30 — stir slowly in one direction and bubbles rise out naturally. A40 needs vacuum degassing.

Q: Why didn't my silicone set?

A: Usually uneven mixing, or contact with water or sulphur- or tin-containing materials. Mix thoroughly 1:1 and keep those away. Try a small test piece with a new material.

Q: My mould is stuck to the original — what now?

A: Always coat the original with release agent or petroleum jelly first.

Q: Which size should I buy?

A: The 400g set suits small moulds and trying a new hardness; the 1kg set suits bigger or repeat projects.

Q: Can I add silicone oil to make it softer?

A: No — it weakens the mould. Choose a softer grade instead.

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