Silicone Rubber 1:1 Mould Maker Translucent 2L kit, two 1L bottles with handles showing Part A and Part B platinum cure silicone
Translucent silicone mould tray cast from Silicone Rubber 1:1 Mould Maker, showing gear-shaped cavity impressions and cast gears
Hands flexing a cured translucent Silicone Rubber 1:1 Mould Maker piece, demonstrating its flexibility
Peeling a translucent silicone mould away from a detailed lion head master model, with a cast copy underneath

Silicone Rubber 1:1 Mould Maker | Translucent | 2L Kit

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Silicone Rubber 1:1 Mould Maker | Translucent | 2L Kit

A translucent, platinum cure (addition-cure) silicone rubber that mixes 1:1 by volume and reproduces the finest surface detail with very low shrinkage. Its softer 20A Shore hardness makes it extra flexible for demoulding delicate, intricate designs, and being platinum cured, it's food grade and skin-safe — ideal for impression moulds, masks, soap and candle moulds, and jewellery or prototype parts cast in conjunction with Solid Cast 660 Polyurethane.

Kit Includes

1 x 1L Part A Bottle 1 x 1L Part B Bottle

Product Details

Kit Size
2L (1L + 1L)
Mix Ratio
1:1 by volume
Pot Life
20 – 30 minutes @ 25°C
Cure Time
2 – 3 hours @ 25°C
Shore Hardness
20A
Coverage
~2 sq mtr @ 1mm depth
Temperature Resistance
Up to 220°C

Key Features

Platinum cure silicone Translucent finish Extra flexible (20A) Food grade & skin-safe Low shrinkage Long mould life

Common Uses

Impression moulds Masks Soap moulds Candle moulds Jewellery & prototype parts Fine detail casting

How to Use

1
Measure equal parts of Part A and Part B by volume — for example, 500ml Part A to 500ml Part B.
2
Mix thoroughly in a straight-sided, flat-bottomed container with a flat ruler-shaped mixing stick, scraping the sides and base of the container.
3
Pour over your master model within the pot life window (20 – 30 minutes @ 25°C).
4
Demould in around 2 to 4 hours @ 25°C. For large casting moulds, leave to set for at least 12 hours before demoulding.

Why Platinum Cure?

Platinum cure silicones use an addition-cure chemistry (catalysed by platinum) rather than the tin-based condensation cure found in cheaper rubbers. That means very low ongoing shrinkage, so fine detail stays accurate over the life of the mould, and a much longer library life — platinum cure moulds can be reused for years, compared to roughly 12 months for a typical tin-cure rubber. It's also FDA-compliant for food and skin contact, which is why it's suited to soap and candle moulds as well as life-casting work. One thing to note: platinum cure silicone won't cure properly against sulfur-based clays (such as sulfur-cure plasticine) — seal a sulfur-based model with an acrylic spray first, or use a sulfur-free modelling clay.

Storage & Safety

Wear protective gloves and glasses when mixing and using. Uncured material can be removed with a solvent or methylated spirit followed by washing with warm soapy water. Always wear a mask when using any solvent cleaner.

Frequently Asked Questions

What is platinum cure silicone, and why does it matter?+
Platinum cure silicone uses an addition-cure reaction catalysed by platinum, giving very low shrinkage, a much longer mould life than tin-cure rubbers, and FDA-compliant food and skin safety.
What's in this kit and what's the mixing ratio?+
This 2L kit contains 1L Part A and 1L Part B, mixed 1:1 by volume.
How is the Translucent version different from the standard silicone?+
This Translucent kit has a softer 20A Shore hardness, giving extra flexibility for demoulding delicate, intricate designs. The standard pink Silicone Rubber 1:1 kits use a firmer 30A hardness, better suited to larger, more solid casting work.
How long does it take to cure and demould?+
Pot life is 20 – 30 minutes at 25°C, it cures in around 2 to 3 hours, and pieces can typically be demoulded within 2 to 4 hours at 25°C.
Is it safe for food or skin-contact moulds?+
Yes. Being platinum cured, it's food grade and non-toxic once fully cured, making it suitable for soap and candle moulds and life-casting work. Avoid sulfur-based modelling clays for the master, as sulfur can prevent platinum silicone from curing.
Reviews

Customer Reviews

Based on 11 reviews
91%
(10)
9%
(1)
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S
Stephen Faulkner
Pen mold

Very easy to use and works great.

O
Oskar Brooks

Silicone Rubber 1:1 Mould Maker | Translucent | 2L Kit

G
Graeme McDonald

Very satisfied

G
Georgina England
Top quality

This silicone works really well and is easy to mix. Will definitely be buying again. Thank you

T
Tristan Gillan
Great results

Works consistently and isn’t super sensitive to mixing ratios , is a little softer than the pink stuff when cured, injection moulds super easy

N
Nadja Leclere

great for mould making