Jesmonite AC100 (Eco-Resin) for Rectangular Mold Box Calculator
Pre-loads specific gravity (1.75) and 2.5:1 mix ratio to calculate exact Part A & Part B weights with cup scraping buffer.
A standard Rectangular Mold Box (15 × 10 × 6 cm minus 150 cm³ master) requires 1418g (50 oz / 3.13 lbs) of Jesmonite AC100 (Eco-Resin). Mix 1012.5g Part A with 405g Part B (8% buffer included).
Casting Material & Volume Mode
Pre-loads specific gravity and 2.5:1 ratio by weight.
Geometry determines the container-volume formula. Use water displacement when the cavity is irregular.
Volume displaced by your master object inside the box.
Compensates for resin clinging to mixing paddles and cup walls (8% recommended).
Includes 8% waste buffer at SG 1.75
Ratio part: 2.5
Ratio part: 1
Net volume before buffer
Order Jesmonite AC100 (Eco-Resin) Kit
High-tear strength Jesmonite AC100 (Eco-Resin) with verified 2.5:1 ratio. Ideal for bubble-free casting.
Jesmonite AC100 (Eco-Resin) vs Alternative Casting Compounds
Compare specific gravities, mix ratios, working times, and cure speeds across casting compounds.
| Material / Specification | Specific Gravity | Mix Ratio | Pot Life | Demold Time |
|---|---|---|---|---|
| Jesmonite AC100 (Eco-Resin)ACTIVE | 1.75 | 2.5:1 (weight) | 12 min | 2 hrs |
| RTV-2 Platinum Silicone (Smooth-On Mold Star 15/30) | 1.07 | 1:1 (weight) | 30 min | 6 hrs |
| RTV-2 Tin Cure Silicone (Condensation Cure) | 1.12 | 10:1 (weight) | 45 min | 12 hrs |
| Jesmonite AC730 (Stone Casting) | 1.85 | 5:1 (weight) | 15 min | 4 hrs |
| Deep Pour River Epoxy (2:1 Ratio) | 1.11 | 2:1 (weight) | 90 min | 48 hrs |
| Table Top & Art Epoxy (1:1 Ratio) | 1.08 | 1:1 (weight) | 25 min | 12 hrs |
Step-by-Step Mix Ratio Derivation: Jesmonite AC100 (Eco-Resin)
How displacement volume, specific gravity, and ratio split combine into final scale weights.
Calculates the empty fluid cavity by taking the gross 900 cm³ box containment volume and deducting the 150 cm³ displaced by the master model.
Multiplies fluid volume by the specific gravity of Jesmonite AC100 (Eco-Resin) (1.75 g/cm³) plus an 8% buffer for cup scraping and pouring loss.
Distributes batch mass according to the exact 2.5:1 ratio by weight.
Engineering Specifications & Troubleshooting Guide: Jesmonite AC100 (Eco-Resin)
Factory-tested parameters, common failure modes, and workbench best practices.
- Water-based acrylic composite material. Zero VOCs, solvent-free, and fire-resistant (Class 0).
- Always add the AC100 Base powder (Part A) gradually into the Liquid (Part B) while blending with a high-shear mixer blade.
- Vibrate or tap the silicone mold firmly on the tabletop for 60 seconds immediately after pouring to release surface air bubbles.
Pouring liquid into dry powder, creating impossible lumpy clumps that ruin surface fidelity.
Frequently Asked Questions: Jesmonite AC100 (Eco-Resin)
Mix ratios, degas guidelines, cure times, and mold making tips.
Q1What is the mix ratio of Jesmonite AC100 (Eco-Resin)?
Q2How much Jesmonite AC100 (Eco-Resin) do I need for a Rectangular Mold Box?
Q3How long before I can demold Jesmonite AC100 (Eco-Resin)?
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