What this industry manufactures
River table makers and furniture workshops build dining and coffee tables, benches, shelving and decorative panels from live-edge wood slabs — walnut, mango, acacia and similar timbers are common in India — cast with a clear or lightly tinted resin channel or void. The same technique extends to smaller wood-resin pieces: cheese boards, coasters, clocks and wall art built around a wood-and-resin combination.
Why Clear Casting Resin is suitable
A river table's resin channel is rarely a single 30 mm pour — most river channels or tabletop pours are built up in successive stages, each poured once the previous layer has reached its initial cure, which keeps exotherm heat manageable and avoids the cracking risk of trying to pour a whole table's depth in one go. Epoxy Clear Casting Resin's 2:1 mix ratio, 900 cPs viscosity and under 0.2% shrinkage support this staged approach: because it shrinks so little on cure, it holds its bond to the wood edge rather than pulling away and leaving a visible gap line — the most visible flaw a finished river table can have. Its UV-stabilised formulation resists yellowing better than a standard, unstabilised epoxy, genuinely useful for a tabletop that sits under window light for years, though like any clear epoxy it is not permanently immune to gradual colour change under prolonged, intense UV exposure.
Required resin characteristics
- 01Low shrinkage to keep a tight, gap-free bond against the wood edge as the resin cures
- 02Optical clarity that doesn't compete with or distort the wood grain it's cast against
- 03A mix ratio and pot life practical for staged, multi-layer pours on a large horizontal surface
- 04Enough hardness once fully cured to be flush-sanded and finished level with the surrounding wood
- 05UV-stabilised colour retention for a piece that will sit under window or room light for years
Manufacturing process
Before any resin is poured, the wood slab is sealed with a thin coat of resin brushed over the cut faces and edges — this stops trapped moisture and air in the wood from off-gassing into the main pour later and causing bubbles. The edges where wood will meet resin are lightly sanded so the cured resin bonds mechanically as well as chemically. A dam is then built around the slab — typically a wood frame lined with sealing tape so cured resin releases cleanly, with the seams sealed with silicone caulk to stop liquid resin leaking out before it gels. Epoxy Clear Casting Resin is mixed 2:1 by weight with Epoxy Hardener, poured in a stage up to around 30 mm deep, and any surface bubbles are released with a heat gun or torch passed briefly over the pour. Once that stage reaches its initial cure — typically the 24-hour mark — the next stage is poured on top, repeating until the full channel depth is reached. After the full 72-hour cure, the piece is released from its dam, flush-sanded level with the wood, and finished.
Advantages
- Under 0.2% shrinkage keeps the resin bonded tight to the wood edge rather than pulling away
- 900 cPs viscosity supports staged, multi-layer pours without excessive dragging
- UV-stabilised formulation resists yellowing better than a standard, unstabilised epoxy
- Shore D 82 hardness once fully cured supports flush-sanding and a durable tabletop finish
Common products produced
- River-style dining and coffee tables
- Live-edge benches and shelving
- Cheese boards, coasters and small wood-resin decor
- Wall art and clock faces built around a wood slab
Frequently asked questions
Not usually in a single pour. Its verified maximum casting depth is around 30 mm per pour, so most river table channels — which are often deeper than that — are built up in successive stages, each poured once the previous layer has reached its initial cure. This is standard practice for epoxy casting generally, not a limitation specific to this product.
Epoxy Clear Casting Resin's shrinkage is under 0.2% once fully cured, which is why it suits this application — a resin that shrinks more can leave a visible gap line at the wood-to-resin seam, the most visible part of a finished river table.
It uses a UV-stabilised formulation that resists yellowing significantly better than a standard, unstabilised epoxy. No clear epoxy is permanently immune to gradual colour change under prolonged, intense UV exposure, so this is best understood as yellowing-resistant rather than an absolute guarantee.
Yes — sealing the cut faces and edges of the wood slab with a thin coat of resin first is standard practice. It stops moisture and air trapped in the wood grain from off-gassing into the main pour and causing bubbles at the wood-resin interface.
Both are 2:1 epoxy systems. Epoxy Clear Casting Resin is suited to the depth of the river channel itself, poured in stages. Some makers finish the flush-sanded tabletop with a final thin, self-levelling flood coat — that thin, flat top layer is Epoxy Art Resin's role, not this product's.
It is mixed 2:1 by weight with a compatible Epoxy Hardener, weighed on a scale rather than measured by volume, since accurate weight ratios matter more here than with a polyester resin dosed by catalyst percentage.
Need Epoxy Clear Casting Resin for your river table build?
Get a bulk quote for Epoxy Clear Casting Resin, or talk to our technical team about staging your pour depth and dosage.