Live-edge walnut desk with a teal epoxy river pour through the center

For resin artists and makers

Mix with certainty.

Pour Bench is a calculator for epoxy pours — tabletops, river tables, jewelry, and coasters. Enter the piece, and get mix amounts, material cost, and a suggested selling price before you open a cup.

Start your pour

Your pour

Project

Project type

Shallow pours, often in sets of 4

Dimensions

Shape

Units

Diameter

Depth / Height

Quantity

Volume = π × radius² × depth. Enter the mold diameter.

Waste buffer

Extra for cups, mixing, and cling10%

5%25%

Adds extra mix on top of the calculated volume so leftover in the cup doesn’t leave you short.

Mix ratio

Ratio

Part A (resin) to Part B (hardener), as printed on the kit.

Measure by

Volume is cups or syringes. Weight is a scale — more precise, using 1.10 g/ml.

Cost & kits

Resin kit price

What you pay for the kit. Using $75.00 per gallon.

Priced per

Per US gallon, per liter, or per US fluid ounce — not weight ounces.

Kit size

Mixed A+B in one kit. Default is 1 gallon.

Kit size unit

Other materials

Pigments, molds amortized, sandpaper, hardware.

1 kit needed for this pour (rounded up).

Pricing & profit

Profit margin

100%

30% · 1.30×300% · 4.00×

100% margin is a 2.00× markup: sell at twice your material cost.

Markup

2.00×

$4.49 cost × 2.00

Suggested price

$8.98

Profit $4.49 after fees

Platform fee

Optional. Typical Etsy take is a 6.5% transaction fee plus about 3% + $0.25 for payments (US). Many sellers enter 10–13% here to cover both. Offsite ads, if enrolled, are extra.

For this pour

Mix cups first — then resin, molds, and color.

Clear 8 ounce graduated mixing cups for epoxy resin

DQELFA

Mixing cups & sticks

50 × 8 oz graduated cups with 50 stir sticks.

View on Amazon

LET'S RESIN

Crystal clear epoxy kit

1 gallon, 1:1 mix — jewelry, coasters, and art.

Amazon

Six-cavity silicone coaster mold with finished resin coasters

RESINWORLD

6-cavity coaster molds

4-inch deep silicone for flowers, shells, and pours.

Amazon

CHANGTIKEJI

24-color mica powder

10 g bottles for resin color and metallic effects.

Amazon

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Pour questions

Short answers. Volumes, kits, and prices here are estimates only — follow your resin’s instructions.

How much epoxy for a river table?: Measure the river channel — length × void width × depth — not the whole slab. Live-edge wood fills part of that void, so a fill around 85% is a realistic start. The ticket then adds your waste buffer. Deep channels usually need a deep-pour formula and more than one lift.
1:1 vs 2:1 mix?: That’s the recipe on the bottle, by volume unless the brand says otherwise. 1:1 is equal parts resin and hardener. 2:1 is twice as much resin as hardener; 3:1 and 4:1 are the same idea. Use the ratio printed on your kit — guessing it is how pours stay tacky.
Ounces per square foot for a floor coat?: A standard 10 mil coat is about 1 fl oz per square foot. A thin seal coat uses less; a heavy build uses more. Porous concrete drinks extra on the first coat. Pour Bench turns your room size, thickness, coats, and porosity into ounces and milliliters — still an estimate.
Why a waste buffer?: Some mixed resin stays in the cup, on the stick, and along the sides of the pot. Ten percent extra is a sane default so you don’t come up short mid-pour. Bump it for lots of small cavities.
How thick can I pour in one layer?: Tabletop and floor resins are thin coats — often 1/8 in or less. Deep-pour river resins are commonly rated around 1–2 in per lift, sometimes more if the brand says so. Thicker than that traps heat. Split the channel into layers; the ticket can show the amount per lift.