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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

Bintangor

calophyllum spp., Clusiaceae, Angiospermae (Hardwood)

reference picture – see below for more pictures

Other names: Koila, Poona, Pumma, Punna, Vumma, Pinnay, Poonnai, Bintangur, Vintanina, Penaga, Sultan champa, Tharapi, Tamanou, Calophyllum, Bansanghal, Vutalau, Domba-gass, Kathing, Poon, Tanghon, Cong, Mu-u

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: 7
Number of individual trees analyzed: 9
Number of specimens: 20
Number of measurements: 60
Max PZC read (of all measurements): 31.4
Min PZC read (of all measurements): 13.4
Max PZC average on one log: 29.4
Min PZC average on one log: 14.5
PZC Average of all logs: 23.6

Species: calophyllum spp.
Family: Clusiaceae
Clade: Angiospermae
Description: Tropical evergreen trees with dense canopies, characterized by leathery, opposite leaves with prominent parallel veins, fragrant white flowers, and spherical drupe fruits.
Other Local Names: Koila, Poona, Pumma, Punna, Vumma, Pinnay, Poonnai, Bintangur, Vintanina, Penaga, Sultan champa, Tharapi, Tamanou, Calophyllum, Bansanghal, Vutalau, Domba-gass, Kathing, Poon, Tanghon, Tamanou, Cong, Mu-u

Reference Colour: Dark red
Texture: Medium
Grain: Interlocked grain
Interlocked Grain: Slight
Notes: Wood dark red to brown red or pinkish brown, with darker veins.

Diameter: 50÷100cm
Density @12% MC: 740kg/m³
Janka Hardness: 1710lbf
Crushing Strength @12%MC: 66MPa
Static Bending Strength @12%MC: 105MPa
Longitudinal Modulus of Elasticity E: 14.8GPa
Volumetric Shrinkage Coefficient: 0.52% per %
Total Tangential Shrinkage TS: 7.7%
Total Radial Shrinkage TS: 5.8%
T/R Anisotropy Ratio: 1.3-
Fibre Saturation Point: 31%
Thermal Conductivity: 0.24W/mk
Lower Heating Value: 19090KJ/Kg
Sapwood Thickness: 5÷10cm
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 BINTANGOR Cross sections of Calophyllum inophyllum
Treatability: Class 4 – non-treatable
Use Class Covered by Natural Durability: Class 2 – inside or under cover (dampness possible)
Durability Notes: This species is listed in the NF EN 350 standard.

Log Buoyancy: Floats
Log Conservation: Moderate (treatment recommended)
Drying Rate: Normal to slow
Drying Risk of Distortion: High 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: Risks of internal stresses. Tendency to woolliness. Filling is recommended to obtain a good finish.
Assembly Nailing Screwing: Good but pre-boring necessary
Additional Notes: Can be used for high-end furniture if the grain is not highly interlocked
End Uses: Heavy carpentry, Formwork, Ship building (planking and deck), building (ribs), Cabinetry (high-end furniture), Boxes and crates, Stairs (inside), Veneer for back or face of, plywood, Panelling, House framing, Exterior joinery, Flooring, Interior joinery, Sliced veneer, Built-in furniture or mobile item

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

Pictures – each from a different individual tree:

Log 1 (from [Source 40]) – PZC = 29.7
Log 2 (C. Inophyllum from [Source 53]) – PZC = 18.0
Log 3 (C. Peekelii from NEHOSOC) – PZC = 30.3
Log 4 (C. Soulattri from NEHOSOC) – PZC = 21.7
Log 5 (C. Inophyllum from NEHOSOC) – PZC = 26.5
Log 6 (C. Inophyllum from [Source 28]) – PZC = 27.1
Log 7 (from [Source 79]) – PZC = 21.8
Log 8 (C. Inophyllum from [Source 58]) – PZC = 14.7
Log 9 (C. Inophyllum from [Source 135]) – PZC = 25.8

See also
LARGE GIFS 1

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