Making an epoxy river table yourself costs €200 to €600 in materials. Ready-made river tables cost €800 to €3,000 or more — so making your own saves considerably, and you create a unique piece that fits your home perfectly. Casting an epoxy table is not difficult, but it does require patience and the right products. A mistake in the casting process is hard to correct. This article covers everything you need to know: from choosing the timber to sanding and finishing the completed piece.
DIY vs. Buying: Cost Comparison
| DIY | Buy (workshop/online) | |
|---|---|---|
| **Small epoxy table (80×80 cm)** | €150 – €300 | €600 – €1,200 |
| **River table coffee table (120×60 cm)** | €200 – €400 | €800 – €1,800 |
| **River table dining table (200×90 cm)** | €400 – €700 | €1,500 – €4,000 |
| **Saving** | 50–75% | — |
Materials for a River Table (dining table 200×90 cm)
| Material | Quantity | Price |
|---|---|---|
| Rustic timber slab (live edge) | 2 pieces | €150 – €300 |
| Deep pour epoxy resin | 5–8 litres | €80 – €150 |
| Colour pigments (epoxy pigment paste) | 3–5 colours | €20 – €40 |
| Mould / formwork (MDF/melamine) | 1 sheet | €30 – €60 |
| Top coat lacquer or oil | 1 set | €30 – €60 |
| Steel legs or wooden legs | 1 set | €80 – €200 |
| **Total** | **€390 – €810** |
Tools
- Random orbital sander (grits 80–120–180–220–320)
- Drill
- Mixing containers and mixing sticks (ideally several)
- Heat gun or blowtorch (for air bubbles)
- Impact drill (for metal legs)
- Kitchen scales (for measuring epoxy)
Choosing Your Materials
Wood species
Live-edge slabs (with the natural tree edge intact) are the most popular choice for river tables. Popular timber species:
| Timber | Colour | Grain | Price/m² |
|---|---|---|---|
| Oak | Warm beige-brown | Open grain, beautiful figure | €80 – €150 |
| Walnut | Dark brown | Fine grain, luxurious look | €120 – €200 |
| Acacia | Golden brown | Wavy grain, exotic | €80 – €140 |
| Elm | Light brown with irregular pattern | Unique, irregular grain | €60 – €120 |
Buy your slabs from a timber merchant that stocks live-edge boards, or search classified ad sites for second-hand slabs.
Choosing epoxy: deep pour vs. table top epoxy
Deep pour epoxy — for filling the river. Low viscosity, can be poured in a single layer up to 3–5 cm deep. Cures more slowly (24–48 hours) but gives a more consistent result.
Table top epoxy — for the finish coat over the timber and the epoxy. A harder layer, more resistant to wear and scratching.
Always buy epoxy specifically designed for DIY use — hardware store epoxy cures too fast and produces more bubbles.
Step-by-Step Guide: Making an Epoxy River Table
Step 1: Prepare the timber
Sand both slabs smooth (grit 80, then 120). Remove any loose bark from the live edge. Bark does not bond well with epoxy and will fall off later.
Fill any large cracks or holes in the timber with a small amount of thin-bodied epoxy. Allow to cure before proceeding.
Dry timber: The timber must be sufficiently dry (moisture content below 12%) to prevent air bubbles forming in the epoxy later. Allow freshly felled timber to dry for at least 3–6 months.
Step 2: Build the mould
Build a mould from melamine or MDF to the exact outer dimensions of the table. Epoxy does not bond to melamine — that is the advantage.
Make sure the mould is perfectly level — epoxy is liquid and will always self-level. If the mould is not level, the river will be crooked.
Seal all joints with silicone sealant (clear). Epoxy is thin and will find the smallest gap.
Step 3: Place the timber in the mould
Lay both timber slabs in the mould, with a gap of 5–15 cm between them (the “river”). Screw or glue the slabs to the mould so they do not float up when the epoxy is poured.
Step 4: Mix the epoxy
Follow the manufacturer’s mixing ratio exactly (usually 2:1 or 3:1 part A:part B by weight). Use kitchen scales — do not mix by eye.
Mix slowly (2–3 minutes) to minimise air bubbles. Scrape the sides and bottom of the container as you go.
Adding colour: Add epoxy pigment paste (never ordinary paint or acrylic). Start with a small amount and build up to the desired intensity. Popular river colours: cobalt blue, turquoise, black, green, combinations with white for a marble effect.
Step 5: Pour the first layer (thin)
Pour a thin first layer (5–8 mm) of epoxy into the river. This is a “seal coat” that closes any small openings in the timber and locks it in place. Allow this layer to cure for 6–8 hours (it should be gel-like, no longer liquid).
Step 6: Remove air bubbles
Immediately after pouring: use a heat gun or blowtorch to remove surface air bubbles. Hold the tool 20–30 cm away and move quickly across the surface. Too long in one spot = heat damage.
Step 7: Pour the main layer
Once the seal coat has cured properly, pour the main layer. Fill the river to slightly above the level of the timber (2–5 mm overpour — this will be sanded back later). Remove bubbles again.
Tip: Do not pour more than 3–5 cm per layer. Pouring deeper generates heat during curing (exothermic reaction) which can cause cracking.
Step 8: Allow to cure
Leave the table to cure for 48–72 hours in a dust-free room. Cover with a cardboard box (not plastic — this causes condensation) to keep dust off.
Step 9: Sand
Once cured: sand the epoxy and timber flat together. Start with grit 80, then 120, 180, 220, 320. Always use sufficient water with the wet sanding method (wet sanding reduces heat and leaves fewer scratches).
The table is ready when the surface is completely smooth and matt at grit 320.
Step 10: Apply the finish coat
Apply a layer of table top epoxy (or alternatively: furniture lacquer, hardwax oil) for a hard, scratch-resistant top coat. Roll out thinly, remove any bubbles. Allow to cure for 24–48 hours.
Optional: polish with cutting compound for a high-gloss mirror finish.
Step 11: Attach the legs
Fix metal or wooden legs with bolts from underneath. Popular options: U-pin metal legs (industrial), angled timber legs (Scandinavian), or tapered metal legs.
Common Mistakes
- Wrong epoxy mixing ratio. Uncured or soft spots are the result. Always use kitchen scales.
- Mould leaks. Apply silicone everywhere — epoxy finds the smallest opening.
- Timber floats up. Always secure the slabs to the mould.
- Too thick a pour. More than 5 cm in one layer causes overheating and cracking.
- Skipping sanding grits. Never skip a grit — jumping from 80 straight to 220 leaves invisible but tactile scratches.
Frequently Asked Questions
How long does it take to make an epoxy river table?
Including curing times: 5–7 days in total. Active working time: 6–10 hours spread across those days.
Is epoxy toxic?
Uncured epoxy (before mixing and during pouring) is an irritant to skin and eyes — wear gloves and ensure good ventilation. Fully cured epoxy is completely safe.
What is the difference between a river table and an epoxy overlay?
A river table has a “river” of epoxy between two timber slabs. An epoxy overlay is a full coating of epoxy over an existing surface (such as a kitchen table). Both techniques use the same epoxy products.
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