Working with Aningeria in Epoxy River Tables
Aningeria is an African hardwood harvested from species within the Sapotaceae family, primarily including Chrysophyllum giganteum, Pouteria altissima (synonymous with Aningeria altissima), Pouteria pierrei (synonymous with Aningeria robusta), and Pouteria superba (synonymous with Aningeria superba and Malacantha superba). Often reaching log diameters of 70 to 90 cm with a sapwood band of 3 to 6 cm, this timber is traditionally used for high-class cabinetwork, interior joinery, and furniture components. According to the CIRAD Tropix technical sheet, Aningeria is not listed in the CITES Appendices (Washington Convention 2025), though it is sometimes confused with Longhi (Gambeya spp.).
Appearance, Figure, and Wood Character
Aningeria displays a creamy white to pale pink-brown heartwood with a lustrous aspect and a fine texture. The sapwood is not clearly demarcated from the heartwood. While the grain is typically straight or slightly interlocked, boards can exhibit a wavy grain pattern that creates a distinct moiré figure. The wood is naturally veined and has historically served as a light-toned substitute for European wild cherry (Prunus avium). Because of its uniform, luminous tone, it provides an understated, neutral canvas that contrasts cleanly against tinted or deep-cast epoxy resin channels.
Density and Monnin Hardness
With an average specific gravity of 0.57 at 12% moisture content, seasoned Aningeria weighs approximately 35.6 lb/ft³. For table builders, a standard 2-inch-thick slab weighs roughly 5.9 lb per square foot, providing substantial heft without becoming unmanageable during shop handling or base assembly.
On the French Monnin hardness scale, Aningeria rates at 2.5. The Monnin scale is an indentation metric where higher values indicate harder wood; this is a distinct European testing standard and must never be converted to a Janka rating. A Monnin hardness of 2.5 places Aningeria in the moderately soft to medium bracket, offering sufficient dent resistance for interior dining tables while remaining responsive to clean edge-profiling.
Shrinkage, Stability, and the Epoxy Interface
Successful river table fabrication depends entirely on controlling wood movement along the casting line. Data published by CIRAD Tropix identifies Aningeria’s dimensional behavior:
- Total tangential shrinkage: 7.0%
- Total radial shrinkage: 3.7%
- St/Sr ratio: 1.9
- Volumetric shrinkage coefficient: 0.41% per 1% change in moisture content
- Fibre saturation point: 31%
An St/Sr ratio of 1.9 indicates a moderate difference between tangential and radial shrinkage. When paired with a volumetric coefficient of 0.41%, slabs subjected to shifting relative humidity will experience dimensional changes that place shear stress on rigid epoxy bond lines. Slabs must be thoroughly dried to target interior equilibrium before casting. During kiln drying, Aningeria exhibits a normal drying rate with only slight risks of distortion and checking, and no known specific risk of collapse or casehardening. However, raw material is highly susceptible to blue stain, particularly during the early phases of air drying, making rapid and controlled drying essential.
Machining, Tooling, and Assembly
Aningeria presents a high blunting effect on standard steel tooling. CIRAD Tropix recommends stellite-tipped saw teeth and tungsten carbide cutting tools to maintain clean edges and avoid burn marks. When cross-cutting, boring, or mortising, the grain has a tendency to splinter, requiring sharp cutters and sacrificial backing boards. The wood stains well, holds nails and screws securely, and accepts interior finishes evenly once properly sanded.
Durability and Interior Limitations
Natural heartwood durability against xylophagous fungi is rated Class 4 to 5 (poorly to not durable). In addition, the timber is classified as Class S (susceptible) to termites and dry-wood borers across all parts of the wood. Consequently, its natural use class is strictly Class 1 (interior use, no dampness). In environments with permanent humidification, use is not recommended. Epoxy tabletops made from Aningeria should be confined exclusively to dry interior settings.
| Property | CIRAD Tropix value | What it means / US units |
|---|---|---|
| Botanical name(s) | Chrysophyllum giganteum, Gambeyobotrys gigantea (synonymous), Pouteria altissima, Aningeria altissima (synonymous), Pouteria pierrei, Aningeria robusta (synonymous), Pouteria superba, Aningeria superba (synonymous), Malacantha superba (synonymous), Pouteria p.p., Aningeria p.p. (synonymous) | |
| Colour / texture / grain | Creamy white; texture fine; grain straight or interlocked; interlocked grain slight | |
| Specific gravity (12% MC) | 0.57 | about 35.6 lb/ft³; a 2-inch-thick slab weighs about 5.9 lb per sq ft |
| Monnin hardness (12% MC) | 2.5 | French hardness scale; higher = harder (not a Janka value) |
| Total tangential shrinkage | 7.0 % | green to oven-dry |
| Total radial shrinkage | 3.7 % | green to oven-dry |
| Ratio St/Sr | 1.9 | closer to 1 = less cupping tendency |
| Coefficient of volumetric shrinkage | 0.41 % per % MC | volume change per 1% change in moisture content |
| Fibre saturation point | 31 % | |
| Thermal conductivity | 0.20 W/(m·K) | |
| Crushing strength (12% MC) | 48 MPa | about 6,960 psi |
| Static bending strength (12% MC) | 84 MPa | about 12,180 psi |
| Modulus of elasticity (12% MC) | 13,690 MPa | about 1,986,000 psi |
| Decay (fungi) resistance | Durability class 4 à 5 – poorly to not durable | |
| Termite resistance | Class S – susceptible | |
| Dry-wood borer resistance | Class S – susceptible (risk in all the wood) | |
| Heartwood treatability | Class 1 – easily permeable | |
| Use class from natural durability | Class 1 – inside (no dampness) | |
| Drying | rate normal; distortion: slight risk; checking: slight risk; collapse: no known specific risk; casehardening: no known specific risk | |
| Suggested kiln program temperatures | 55–65 °C | about 131–149 °F |
| Machining | blunting high; saw teeth: stellite-tipped; cutting tools: tungsten carbide | |
| Nailing and screwing | Good | |
| CITES status | This species is not listed in the CITES Appendices (Washington Convention 2025). Notes. Sometimes confused with LONGHI (Gambeya spp.). |
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).
Practical Pre-Pour Checklist for Aningeria Slabs
- Verify that the core moisture content of the Aningeria slab matches stable interior levels to account for its 0.41% volumetric shrinkage coefficient.
- Inspect the slab surfaces and live edges for blue stain fungi that may have developed during early air drying.
- Trim live edges and machine glue-line joints using sharp tungsten carbide cutters to minimize splintering along the river cavity.
- Check edge profiles for tear-out or breakout after cross-cutting or mortising before sealing.
- Clean fine wood dust from the open grain to ensure direct resin contact across the bonding surfaces.
- Ensure the finished furniture design is dedicated exclusively to indoor use classes (dry interior environments).
Sources
Published October 30, 2026. Sources are linked in the text.
Header image: original graphic by BigEpoxy.com.
Staff note: Despite its low fungal and borer durability, Aningeria heartwood is rated as Class 1 (easily permeable) for preservative treatment in the CIRAD Tropix data, meaning protective chemical treatments penetrate the wood structure readily if preventive bug treatments are required before indoor fabrication. (Source: CIRAD Tropix 7 technical sheet: Aningeria.)