Retarder AC730

AC730 retarder for Jesmonite® creations

The retarder is an additive designed to slow the setting of Jesmonite® and so extend the working time available before curing. Compatible only with Jesmonite® AC730, it offers greater flexibility and better control during application.

It allows careful handling without premature curing, giving you enough time to achieve fine finishes and complex patterns. It is particularly useful when creating:

• Large pieces
• Complex moulds with lots of detail
• Marbled or terrazzo effects that need more handling time
• Multiple pours
• Work in hot weather, when Jesmonite® sets more quickly

With the AC730 retarder, working time can be extended to around 45 to 60 minutes depending on the dosage used and ambient conditions.

Dosage and use

Dosage: 2 to 8 g per kg of mix. We recommend starting at 2 g per kg of mix, then increasing gradually according to your needs and your workshop temperature.

How to use:

1. Weigh out the quantity of AC730 liquid.
2. Add the retarder to the AC730 liquid.
3. Stir for a few seconds to blend.
4. Then add the AC730 powder.

Precautions

Overdosing can slow the setting excessively and increase demoulding time. Excessive amounts can also affect the final strength of your piece.

Always carry out a preliminary test: humidity, temperature and mix volume strongly influence the result.

This product has not undergone food-safety testing.