Working with Cabreuva in Custom Epoxy Tabletops
Cabreuva, encompassing botanical species such as Myroxylon balsamum, Myroxylon peruiferum, and the synonymous Myroxylon toluiferum, is a dense Latin American hardwood traditionally favored for high-class cabinetwork, interior staircases, and premium flooring. Sourced from trees with log diameters typically ranging from 50 to 60 cm, it presents rich color and striking grain patterns that catch the eye of furniture makers. According to the international trade data published in the CIRAD Tropix technical sheet, this species is not listed in the CITES Appendices (Washington Convention 2025).
For woodworkers considering Cabreuva for custom wood-and-epoxy river tables, its extreme density, resinous nature, and moderate shrinkage properties introduce distinct fabrication considerations that must be handled carefully from rough prep to the final coat.
Appearance, Figure, and Wood Characteristics
Cabreuva exhibits a distinctly contrasting appearance across the log profile. Its sapwood is cream white, clearly demarcated, and measures between 4 and 8 cm in thickness. The heartwood spans from purplish-red to reddish brown, darkening upon exposure to light and air, frequently accented by stripes of lighter colour. The wood possesses a fine texture and slight interlocked grain, with a very fine storeyed structure that remains perceptible upon close inspection.
When cutting into Cabreuva, makers often detect a pleasant slight scent released by the wood. However, builders must also watch for sporadic resinous marks scattered through the heartwood. These natural extractives account for its historical use in perfumery and medicinal applications, but they require extra care when mating slabs to synthetic casting resins.
Density, Monnin Hardness, and Mechanical Strength
Cabreuva is an exceptionally heavy timber. CIRAD Tropix reports an average specific gravity of 0.95 at 12% moisture content, which equates to roughly 59.3 lb/ft³. In the shop, a standard 2-inch-thick tabletop slab weighs approximately 9.9 lb per square foot. That sheer mass requires robust mechanical table bases, heavy-duty joinery, and reliable shop carts during fabrication.
On the French Monnin hardness scale—where higher numbers reflect a harder surface, distinct from the American Janka test—Cabreuva registers a score of 10.0. This high rating highlights its extreme resistance to indentation and surface wear. In terms of structural stiffness and strength, the species exhibits a crushing strength of 85 MPa (about 12,330 psi), a static bending strength of 149 MPa (about 21,610 psi), and a modulus of elasticity of 20,560 MPa (about 2,982,000 psi). It will easily support heavy spans without structural sagging.
Shrinkage, Stability, and Epoxy Interface Dynamics
When embedding wood slabs alongside an unyielding epoxy river, radial and tangential shrinkage values dictate whether the wood-epoxy bond line will hold or tear over seasonal humidity swings. Cabreuva has a fiber saturation point of 23%, with a total tangential shrinkage of 8.0% and a total radial shrinkage of 4.9% from green to oven-dry.
Its tangential-to-radial shrinkage ratio sits at 1.6, while its coefficient of volumetric shrinkage is 0.58% per 1% change in moisture content. Because the ratio is relatively moderate at 1.6, the wood shows a lower tendency to cup or twist than more erratic tropical timbers. However, its volumetric coefficient of 0.58% per percent moisture change still generates significant lateral forces against casting resin if the moisture content fluctuates inside an indoor space. Wood must be acclimated and thoroughly dried before pouring.
Drying Risks, Machining, and Tooling Wear
The drying rate for Cabreuva is categorized as slow. The CIRAD Tropix sheet indicates a slight risk of distortion and a slight risk of checking, with no known specific risk of collapse or casehardening. Standard industrial drying schedules apply suggested kiln temperatures starting at 45 °C and ramping up to 65 °C (about 113 to 149 °F).
In the machine room, Cabreuva demands sharp tooling. The blunting effect on cutters is fairly high. CIRAD recommends stellite-tipped teeth for sawing operations and tungsten carbide for all profile shaping and surfacing cutters. Despite its tool-dulling characteristics, the wood delivers very fine surfaces after sanding and produces good results in turnery operations.
Gluing, Fastening, and Finishing Notes
Because of its 0.95 specific gravity, CIRAD notes that gluing must be especially performed in compliance with the code of practice. For epoxy tabletops, this means meticulous mechanical prep: flattening the live edge or glue face, wiping away dry dust, and following the resin manufacturer’s directions for bonding dense hardwoods. Mechanical fastening also requires attention; nailing and screwing hold well, but pre-boring is strictly necessary to avoid splitting.
Finishing requires caution. The CIRAD data sheet warns of occasional difficulties with finishing caused by the natural resin in the wood. Solvent wiping prior to applying seal coats or casting resins helps prevent adhesion failure and ensures the epoxy properly locks into the wood surface.
Natural Durability and Listed Uses
Cabreuva is naturally resilient. The heartwood achieves Durability class 1–2 (very durable to durable) against xylophagous fungi, Class D against dry-wood borers (with risks limited strictly to the sapwood), and Class D against termites. It is classified in heartwood treatability class 3–4 (poorly or not permeable) and reaches natural durability Use Class 4, signifying it can withstand ground or fresh water contact without added preservatives. Beyond high-class cabinetwork and sliced veneer, it is regularly specified for exterior joinery, mouldings, turned goods, and ship building.
| Property | CIRAD Tropix value | What it means / US units |
|---|---|---|
| Botanical name(s) | Myroxylon balsamum, Myroxylon toluiferum (synonymous), Myroxylon peruiferum | |
| Colour / texture / grain | Red brown; texture fine; grain interlocked; interlocked grain slight | |
| Specific gravity (12% MC) | 0.95 | about 59.3 lb/ft³; a 2-inch-thick slab weighs about 9.9 lb per sq ft |
| Monnin hardness (12% MC) | 10.0 | French hardness scale; higher = harder (not a Janka value) |
| Total tangential shrinkage | 8.0 % | green to oven-dry |
| Total radial shrinkage | 4.9 % | green to oven-dry |
| Ratio St/Sr | 1.6 | closer to 1 = less cupping tendency |
| Coefficient of volumetric shrinkage | 0.58 % per % MC | volume change per 1% change in moisture content |
| Fibre saturation point | 23 % | |
| Thermal conductivity | 0.31 W/(m·K) | |
| Crushing strength (12% MC) | 85 MPa | about 12,330 psi |
| Static bending strength (12% MC) | 149 MPa | about 21,610 psi |
| Modulus of elasticity (12% MC) | 20,560 MPa | about 2,982,000 psi |
| Decay (fungi) resistance | Durability class 1-2 – very durable to durable | |
| Termite resistance | Class D – durable | |
| Dry-wood borer resistance | Class D – durable (sapwood demarcated, risk limited | |
| Heartwood treatability | Class 3-4 – poorly or not permeable | |
| Use class from natural durability | Class 4 – in ground or fresh water contact | |
| Drying | rate slow; distortion: slight risk; checking: slight risk; collapse: no known specific risk; casehardening: no known specific risk | |
| Suggested kiln program temperatures | 45–65 °C | about 113–149 °F |
| Machining | blunting fairly high; saw teeth: stellite-tipped; cutting tools: tungsten carbide | |
| Nailing and screwing | Good but pre-boring necessary | |
| CITES status | This species is not listed in the CITES Appendices (Washington Convention 2025). |
Values from the CIRAD Tropix technical sheet (average values for mature wood, 12% moisture content where noted). US-unit conversions are calculated by BigEpoxy (1 MPa = 145.04 psi; density = specific gravity × 62.43 lb/ft³).
Is Cabreuva a Good Epoxy Table Wood?
Cabreuva is a viable, high-performance hardwood for epoxy river tables, provided the builder accounts for its extreme density and natural resin content. Its rich reddish-brown tone, fine texture, and Monnin 10.0 hardness create a durable tabletop that resists everyday dings and scratches. The moderate 1.6 shrinkage ratio helps prevent warping, but because of its 0.58% volumetric movement factor and natural extractives, builders must ensure the timber is thoroughly dried, pre-bore every screw, and follow strict surface preparation standards to maintain a permanent bond with the epoxy resin.
Sources
Published October 30, 2026. Sources are linked in the text.
Header image: original graphic by BigEpoxy.com.
Staff note: Because CIRAD Tropix classifies Cabreuva’s heartwood as poorly or not permeable (treatability Class 3–4), deep penetrating stabilizing resins will not absorb easily, so builders must rely primarily on careful mechanical surface prep for epoxy adhesion. (Source: CIRAD Tropix 7 technical sheet: Cabreuva.)