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PZC Chatometry

A standard system to measure wood chatoyance

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    • Woodworker’s Guide to Chatoyance
    • Woodworker’s Guide to Chatoyance – Compact Edition

Imbuia

phoebe porosa, Lauraceae, Angiospermae (Hardwood)

reference picture – see below for more pictures

Other names: Canela, Canela imbuia, Embuia, Brazilian walnut

Chatoyance was measured by the chatometry.com team using the PZC method. The statistics for this specific timber are hereby summarized to provide an evaluation of data robustness:
Number of sources for samples: 5
Number of individual trees analyzed: 5
Number of specimens: 14
Number of measurements: 42
Max PZC read (of all measurements): 20.9
Min PZC read (of all measurements): 7.5
Max PZC average on one log: 18.8
Min PZC average on one log: 8.0
PZC Average of all logs: 12.2

Species: phoebe porosa
Family: Lauraceae
Clade: Angiospermae
Description: Phoebe Porosa is a distinctive shrub or small tree, characterized by its deeply textured, porous bark and sturdy, ovate leaves. Its mature stems feature a visible network of tiny pores, giving the plant a unique, almost breathable appearance.
Other Local Names: Canela, Canela imbuia, Embuia, Brazilian walnut, Brazilian walnut

Reference Colour: Yellow brown
Texture: Fine
Grain: Straight or interlocked
Interlocked Grain: Slight
Notes: Heartwood yellow brown to dark brown with irregular, thin darker veins. Pleasant scent.

Diameter: 80÷120cm
Density @12% MC: 710kg/m³
Janka Hardness: 1470lbf
Crushing Strength @12%MC: 49MPa
Static Bending Strength @12%MC: 84MPa
Longitudinal Modulus of Elasticity E: 9.26GPa
Volumetric Shrinkage Coefficient: 0.45% per %
Total Tangential Shrinkage TS: 6.8%
Total Radial Shrinkage TS: 3.3%
T/R Anisotropy Ratio: 2.1-
Fibre Saturation Point: 25%
Thermal Conductivity: 0.24W/mk
Lower Heating Value: 19830KJ/Kg
Sapwood Thickness: 3÷6cm
Sapwood Demarcation: Clearly demarcated

Resistance to Decay: Class 3 – moderately durable
Resistance to Dry Wood Borers: Class D – durable (sapwood demarcated, risk limited to sapwood)
Resistance to Termites: Class M – moderately durable
Treatability: Class 2 – moderately treatable.
Use Class Covered by Natural Durability: Class 2 – inside or under cover (dampness possible) IMBUIA

Log Buoyancy: Floats
Log Conservation: Moderate (treatment recommended)
Drying Rate: Slow
Drying Risk of Distortion: Slight risk
Drying Risk of Case Hardening: No known specific risk
Drying Risk of Checking: Slight risk

Blunting Effect: Normal
Sawing Tooth: Ordinary or alloy steel
Machining Tool: Ordinary
Suitability for Peeling: Good
Suitability for Slicing: Good
Sawing Machining Notes: Sawdust may cause dermatitis.
Assembly Nailing Screwing: Good
Additional Notes: Can be used as a substitute for European walnut (Juglans regia). This species is most, often reserved for deluxe end uses
End Uses: Turned goods, Interior joinery, Framing, Built-in furniture or mobile item, Ship building (planking and deck), Moulding, Cabinetry (high-end furniture), House framing, Stairs (inside), Flooring, Veneer for back or face of plywood, Sliced veneer, Panelling, Exterior panelling, Exterior joinery

Source 1: Tropical Timber Atlas, Editions Quae, e-ISBN 978-2-7592-2770-9

Pictures – each from a different individual tree:

Log 1 (from NEHOSOC) – PZC = 17.4
Log 2 (from [Source 4]) – PZC = 18.0
Log 3 (from Evolution Panels and Doors) – PZC = 12.9
Log 4 (from [Source 27]) – PZC = 8.7
Log 5 (from P. Hinds) – PZC = 8.4

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