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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

Cherry, Sweet

prunus avium, Rosaceae, Angiospermae (Hardwood)

reference picture – see below for more pictures

Other names: Wildkirsche, Cerezo silvestre, Merisier, Ciliego selvatico, Wild cherry

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: 12
Number of individual trees analyzed: 16
Number of specimens: 55
Number of measurements: 171
Max PZC read (of all measurements): 20.6
Min PZC read (of all measurements): 8.5
Max PZC average on one log: 18.4
Min PZC average on one log: 9.0
PZC Average of all logs: 15.6

Species: prunus avium
Family: Rosaceae
Clade: Angiospermae
Description: Deciduous tree with smooth, reddish-brown bark, oval serrated leaves, and clusters of white flowers in spring, producing small, round, red to dark purple edible cherries.
Other Local Names: Wildkirsche, Cerezo silvestre, Merisier, Ciliego selvatico, Wild cherry

Reference Colour: Orange yellow
Texture: Medium
Grain: Straight
Interlocked Grain: Absent
Notes: Yellow brown to reddish brown, sometimes veined, the wood tends to become darker and to have a golden shade with time. The texture is fine to medium for wild trees and medium for orchard trees. Sometimes slightly wavy grain.

Diameter: 35÷60cm
Density @12% MC: 600kg/m³
Janka Hardness: 1290lbf
Crushing Strength @12%MC: 50MPa
Static Bending Strength @12%MC: 95MPa
Longitudinal Modulus of Elasticity E: 10.2GPa
Volumetric Shrinkage Coefficient: 0.55% per %
Total Tangential Shrinkage TS: 8.4%
Total Radial Shrinkage TS: 5.1%
T/R Anisotropy Ratio: 1.6-
Fibre Saturation Point: 25%
Thermal Conductivity: 0.2W/mk
Lower Heating Value: 17020KJ/Kg
Sapwood Thickness: 2÷6cm
Sapwood Demarcation: Clearly demarcated

Resistance to Decay: Class 5 – non-durable
Resistance to Dry Wood Borers: Class S – susceptible (risk in all the wood)
Resistance to Termites: Class S – susceptible
Treatability: Class 3 – poorly treatable
Use Class Covered by Natural Durability: Class 1 – inside (no risk of dampness) CHERRY WOOD

Log Buoyancy: Not applicable
Log Conservation: Low (treatment necessary)
Drying Rate: Normal
Drying Risk of Distortion: High risk
Drying Risk of Case Hardening: No known specific risk
Drying Risk of Checking: Slight risk

Blunting Effect: Normal
Machining Tool: Ordinary
Suitability for Peeling: Good
Suitability for Slicing: Good
Sawing Machining Notes: Cherry wood has a good aptitude for bending.
Assembly Nailing Screwing: Good but pre-boring necessary
Assembly Notes: Acidic glues may cause a lasting stain of the wood.
End Uses: Turned goods, Cabinetry (high-end furniture), Interior joinery, Sliced veneer, Sculpture

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 5]) – PZC = 15.1
Log 2 (from [Source 4]) – PZC = 18.6
Log 3 (from [Source 14]) – PZC = 13.8
Log 4 (from [Source 9]) – PZC = 15.1
Log 5 (from Linea Legno) – PZC = 13.2
Log 6 (from P. Hinds) – PZC = 17.2
Log 7 (from [Source 27]) – PZC = 13.6
Log 8 (from [Source 1]) – PZC = 11.3
Log 9 (from Seralvo) – PZC = 16.4
Log 10 (from Linea Legno) – PZC = 13.8
Log 11 (from Linea Legno) – PZC = 17.7
Log 12 (from Linea Legno) – PZC = 16.3
Log 13 (from Linea Legno) – PZC = 16.5
Log 14 (from [Source 24]) – PZC = 18.6
Log 15 (from Segheria Proverbio) – PZC = 17.8
Log 16 (from Joey Montagut) – PZC = 9.0

See also
FINISHING SWEET CHERRY
PROGRESSIVE GRIT SANDING
SUPERSURFACING
EPOXY RESIN
SUNLIGHT WEATHER EXPOSURE ON SWEET CHERRY
UV LIGHT EXPOSURE
SCRAPING
PROGRESSIVE GRIT SANDING PART 2

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