What temperature it reachs during the casting?

I think you should look in Jesmonite website for this kind of information. After 15 min, when it reached hardness, it was quite warm, like 40 degrees, and really, I didn’t measure it, and not idea what happen in the next 24 hours (which is the time for curing).

This is the statement from the manufacturers; I can confirm that all Jesmonite materials are non-solvent and contain zero VOC’s. Please be aware that we have never tested any Jesmonite products for food safety. For AC730 casts I usually use a brand called H-Seal, it’s a concrete countertop sealant, its food safe, UV resistant, high temperature resistant and of course waterproof. So it looks like they are safe, however have never been tested to be certified as such.

Roughly what volume does this kit make?

Based on the wet density stated by the manufacture of 1.845 a 3.5kg kit would make approx 1.89 litres in volume.

No is not. You need to add white pigment for a true white.

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Jesmonite AC100 Water Based Casting Resin 3.5kg Kit

Product ID: 93897839

Details

Brand
Polycraft ( MB
Item form
Liquid
Material
Acrylic Resin
Special feature
Water Based
Specific uses for product
Craft

⏳24h full cure time

🔥Class ‘0’ fire-resistant rating

⚖️2.5:1 precise mix ratio

Description

🎨 Cast brilliance, not compromises.

VERSATILE VIBRANT - Water-based, solvent-free formula lets you craft detailed, durable pieces indoors or out, with customizable pigments for that signature look.
FAST TRACK CREATIVITY - Demould in just 2 hours and fully cure in 24—turn your ideas into stunning reality faster than ever.
FIRE SAFE FUTURE READY - Class ‘0’ fire rating means your creations meet top-tier safety standards—because style shouldn’t compromise security.
MOULD FRIENDLY SCALABLE - Gentle on rubber moulds and scalable to any project size—expand your creative horizons without limits.
EFFORTLESS PRECISION MIXING - Achieve flawless casts every time with the exact 2.5:1 powder-to-liquid ratio—no guesswork, just perfection.

Jesmonite AC100 is a premium water-based, two-part acrylic resin kit (3.5kg) designed for professional-grade casting and laminating. It features a precise 2.5:1 powder-to-liquid mix ratio, fast demoulding in 2 hours, and full cure within 24 hours. Fire-resistant with a Class ‘0’ rating, it’s safe, solvent-free, and compatible with rubber moulds, making it ideal for durable, lightweight, and detailed decorative or functional pieces both indoors and outdoors.

Specifications

ASIN	B07JNF43JZ
Best Sellers Rank	56,567 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 133 in Sculpting Moulding & Casting
Brand	Polycraft ( MB Fibreglass )
Colour	White with a peachy/pink tone
Compatible Material	Plastic
Container Type	['Bucket']
Country Of Origin	United Kingdom
Customer Reviews	4.7 4.7 out of 5 stars (292)
Full Cure Time	24 Hours
Included Components	Liquid & Powder
Item Form	Liquid
Item Package Quantity	1
Item Type Name	Acrylic Resin
Item Volume	3.5 Kilograms
Item Weight	3.5 Kilograms
Manufacturer	Jesmonite ( MB Fibreglass )
Manufacturer Part Number	JES1003.5
Material	Acrylic Resin
Model Number	JES/AC100/KIT/3.5KG/V
Other Special Features of the Product	Water Based
Specific Uses For Product	Craft
Unit Count	3500.0 gram
Viscosity	niskiej wizkozy
Viscosity Level	Low
Water Resistance Level	Not Water Resistant

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