River Table Epoxy Calculator
Average the width of live-edge wood slabs to calculate the exact volume and gallon kits of deep pour epoxy needed. Adjust the parameters in the interactive workbench below to get immediate recipe card outputs.
Epoxy & River Table Estimator
Scale from 1 prototype to full production run
Step-by-Step Pour Plan
- Seal live wood edges with a thin brush coat of epoxy to prevent bubble off-gassing.
- Clamp wood firmly into the mold box with Tyvek tape and silicone-sealed corners.
- Pour the main river channel layer (up to 2 inches thick per pour).
- Pop air bubbles periodically using a heat gun or torch.
- Allow 72 hours for full cure before planning, sanding, and polishing.
MEASUREMENT OUTPUTS
Project Calculation Summary
Studio Batch of 1 project for River Table (120x60x3.8 cm): • Per Single Project: 5417g Resin (A) + 2709g Hardener (B) [Total: 8126g]. • Total Studio Run (1 Units): 5417g Resin (A) + 2709g Hardener (B) [Total Mass: 8126g / 8.13 kg]. • Mix Ratio: 2:1 | Buy Recommendation: 1x 2-Gallon Pro Kit.
MakerRatio • Studio Workshop Batch Sheet
https://makerratio.com • Precision Craft Formula Record
Date: _______________
Batch #: ____________
Project: Let's Resin Deep Pour (river x 1)
Category: Epoxy Resin
Dimensions: River Table: 120x15x3.8 cm (x1)
Mix Ratio: 2:1 | Batch: 1 project(s)
Specific Gravity: 1.08 g/ml
Safety Spill Margin: 10%
Batch Mix Breakdown (By Exact Weight)
Workshop Safety & Quality Protocol:
[ ] Ambient room temp 70°F–78°F (21°C–25°C) & mold leveled.
[ ] Protective nitrile gloves on & workspace ventilation active.
[ ] Mix thoroughly scraping sides and bottom for 3 full minutes.
[ ] Verify pot life and demold window per manufacturer TDS.
Curing Schedule Log:
Pour Time: ___________
Gel / Tack-Free: ______
Demold Time: ________
Recommended Materials & Tools for this Project
LET'S RESIN 2:1 Deep Pour Epoxy Kit
Formula: 2:1 mix ratio by volume/weight. Formulated for deep single pours up to 2–4 inches per layer with low viscosity self-degassing.
High-Gloss Sheathing Mold Release Tape
Specification: Heavy-duty polypropylene barrier tape. Prevents epoxy adhesion when building custom melamine river table mold forms.
Transparency Notice: As an Amazon Associate, MakerRatio earns from qualifying purchases at zero extra cost to you. Product recommendations are selected based on verified Manufacturer Technical Data Sheets (TDS). Always consult chemical safety data before pouring.
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To calculate the exact volume and weight splits for this craft project, the workbench executes the following geometric equations:
Deep Pour Epoxy Formulation & Pour Depth Matrix
Chemical Exotherm LimitsComparison of commercial deep-pour epoxy formulations, maximum safe pour depth per layer, working pot life, and cure duration.
| Epoxy Brand & System | Mix Ratio (Vol / Wt) | Max Single Pour Depth | Working Time (Pot Life) | Full Cure Time | Best Project Application |
|---|---|---|---|---|---|
| TotalBoat ThickSet Deep Pour | 3:1 by volume | 2.0" to 3.0" (50–75mm) | 60 – 90 mins | 48 – 72 hours | Large dining river tables, deep live-edge voids. |
| Superclear Liquid Glass 2.0 | 2:1 by volume | 2.0" to 4.0" (50–100mm) | 90 – 120 mins | 72 hours | Ultra-clear crystal river channels with pigments. |
| EcoPoxy FlowCast | 2:1 by volume | 1.5" (38mm) | 60 mins | 72 hours | Bio-based low-odor river boards & charcuterie slabs. |
| WiseBond Deep Pour 2:1 | 2:1 by volume | 2.0" (50mm) | 60 mins | 48 – 72 hours | Live edge coffee tables & thick wood turnings. |
| Chill Ice #2 Deep Pour | 2:1 by volume | 2.0" (50mm) | 120 mins | 72 – 96 hours | Massive casting blocks & industrial furniture slabs. |
| MAS Deep Pour Epoxy | 3:1 by volume | 1.5" (38mm) | 60 mins | 48 – 72 hours | Turning blanks, charcuterie boards, medium rivers. |
| Standard 1:1 Tabletop Epoxy | 1:1 by volume | 1/4" Max (6mm) | 20 – 30 mins | 16 – 24 hours | SEAL COATS ONLY (Not for deep pours; will boil/smoke). |
In-Depth Crafting Guide & Density Analysis
Building a custom epoxy river table requires hundreds of dollars in high-grade polymers, making accurate volume math vital. Live-edge lumber features organic curves and varied grain, meaning the river channel width changes continuously along the table. Calculating an average width across multiple measurement points prevents purchasing insufficient resin or mixing excess batches that flash-cure in the bucket.
This river table estimator calculates your cubic volume across imperial (cubic inches, gallons) and metric units (liters, kilograms). It factors in specific gravities for leading deep-pour systems (TotalBoat ThickSet, Superclear, EcoPoxy FlowCast) and splits Part A resin and Part B hardener based on your system's exact 2:1 or 3:1 ratio.
Frequently Asked Questions (River Table Epoxy Calculator)
Why can't you use standard 1:1 tabletop epoxy for deep river table voids?
Standard 1:1 tabletop epoxy is chemically formulated to cure rapidly in thin coats (1/8" to 1/4"). If poured deep into a 1.5-inch river void, the concentrated mass generates an uncontrollable exothermic heat reaction (temperatures exceeding 300°F), causing the resin to boil, crack, smoke, turn yellow, and scorch the wood.
How do you calculate the volume of an irregular live-edge river channel?
Measure the total channel length. Then, take 4 to 6 width measurements at equal intervals along the length (e.g., at every foot). Add these widths together and divide by the count to determine the Average Channel Width (W_avg). Multiply Length × W_avg × Slab Thickness to find total cubic volume.
Why do professionals add a 15% to 20% waste factor to river table pours?
The calculated geometric volume does not account for: (1) wood end-grain absorption, (2) resin clinging to mixing buckets and stir sticks, (3) filling micro-fissures and knot voids in the live edge, and (4) slight resin shrinkage (1%–2%) during curing.
Why is a wood edge seal coat mandatory before the main deep pour?
Dry live-edge lumber contains microscopic air pockets. When warm liquid resin enters the channel, air escapes from the wood pores (outgassing), creating trapped bubbles. Brushing a thin 1:1 seal coat over the live edges 4 hours prior locks the wood pores and guarantees a bubble-free pour.
How many gallons of epoxy are needed for a 6 ft × 12 in × 1.5 in river table?
A channel measuring 72" long × 12" average width × 1.5" deep equals 1,296 cubic inches. Dividing by 231 (cubic inches per gallon) equals 5.61 gallons. Adding a 15% safety buffer brings the total to 6.45 gallons (approx. 24.4 liters or 26.8 kg of mixed resin).
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