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PZC Chatometry

A standard system to measure wood chatoyance

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  • What is Chatoyance?
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    • Scale example 2
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    • Africa
      • Abura
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      • Agathis
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      • Jarrah
      • Maple, Queensland
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    • South and Central America
      • Angelim
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      • Tulipwood (Brazilian)
      • Ziricote
  • Case studies
    • Roasting Curly Maple
    • Epoxy resin
    • Bleaching Sapele
    • Sapwood vs Heartwood
    • Different Materials
    • Sunlight & Weather
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      • Sunlight & Weather exposure on sweet cherry
      • Sunlight exposure on field maple
      • Sunlight exposure on Tasmanian Blackwood
      • UV light exposure
    • Finishing
      • Finishing Maple
      • Finishing Curly Maple
      • Finishing Curly Maple – part 2
      • Surface preparation on Curly Maple
      • Incremental grit and finishing on Curly Maple
      • Finishing Okoume
      • Finishing London Plane
      • Finishing Blonde European Walnut
      • Finishing European Ash
      • Finishing European Elm
      • Finishing Etimoe
      • Finishing Sweet Cherry
      • Finishing Ovangkol
      • Finishing European Oak
      • Finishing Birch
      • Finishing Teak
      • Finishing Iroko
      • Finishing Sapele
      • Finishing Sumac
      • Finishing Redbud
      • Finishing Kotibe
      • Finishing Indian Rosewood
      • Finishing Hackberry
      • Finishing Paldao
      • Finishing Bocote
      • Finishing Merbau
      • Finishing Snakewood
      • Finishing Purpleheart
      • Finishing Padouk
      • Finishing Mulberry
      • Finishing Niangon
      • Finishing Tasmanian Blackwood
    • Progressive grit sanding
    • Ultra-fine sanding
    • Supersurfacing
    • Raw Veneer vs fine sanded
    • Cleaning Black Walnut
    • Quartersawn vs Flatsawn
      • Quartersawn vs Flatsawn on London plane
      • Quartersawn vs Flatsawn on Red Oak
      • Quartersawn vs Flatsawn on European Beech
      • Quartersawn vs Flatsawn on Louro Faia
      • Quartersawn vs Flatsawn on White Mulberry
    • Runout Angle
    • Mud Curing on Osage Orange
    • No. 1 – Hawaiian Koa
    • High-res videos
    • Large GIFs [heavy pages…]
      • Large GIFs 1
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      • Large GIFs 10
      • Large GIFs 11
      • Large GIFs 12
      • Large GIFs 13
      • Australian species
    • Wood samples
    • Fresh-cut wood
    • From firewood to PZC results
    • Hunting for Tasmanian Blackwood
    • Included branches and Crotches
    • Chatoyance distribution within a tree
    • Tasmanian Blackwood – heartwood and sapwood
    • Stabilization
    • Microscope pictures
    • Out of the tablesaw
    • Chatoyance vs Fluorescence
    • Patch of Black Cherry trees
    • Spalting
    • Bark
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    • Dying Curly Maple
    • Ammonia fuming
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Finishing Etimoe

This set of tests is aimed at understanding the effect of different finishes on Etimoe.

A set of 13 consecutive veneer sheets (from “A” to “M”) were employed; these consecutive layers of the initial log and start from very similar PZC values. All samples were sanded to 240-grit.

A special thanks goes to company Seralvo for providing the veneer samples and Veleca for supporting us with finish samples.

We tested these finishes:
Sample A: Veleca Palkerol (water based anionic polyurethane – floor finish)
Sample B: Veleca Pinteco (acrylic emulsion – outdoor finish)
Sample C: Veleca Mobil H (water based acrylic – furniture finish)
Sample D: Veleca Nitrolux (thinner based ketone resin – classic furniture finish)
Sample E: Veleca Tampoval (blonde dewaxed shellac – antique furniture finish)
Sample F: Veleca Olio per Teak (Tung oil based – exotic wood finish)
Sample G: Boiled Linseed Oil (BLO)
Sample H: Furniture restoring oil
Sample I: Nitrocellulose spray lacquer (NCL)
Sample J: Acrylic spray lacquer
Sample K: Blonde Dewaxed Shellac “Medium” (2 parts in 13 parts of Alcohol)
Sample L: Transparent epoxy resin
Sample M: A more complex sequence: sanding to #800, then pore filling with epoxy, then sanding to #10’000, then Veleca Nitrolux
Sample N: Rubio Monocoat

It was concluded that:
1) Chatoyance is impressively increased only by most of these clear coats, with values around and over 40 PZC reached in some cases
2) Nitrolux and Nitrocellulose lacquer provide good results
3) The complex procedure applied to sample “M” provided the best results
4) All these “clear” finishes significantly darken the surface

Tables below summarize the results in terms of chatoyance (PZC):

Tables below summarize the results in terms of brightness (fraction of white paper brightness):

Pictures below show the results:

Sanding to 240-grit – no finish (sample A – PZC = 12.2)
Sanding to 240-grit + 1 Palkerol coat (sample A – PZC = 29.4)
Sanding to 240-grit + 1 Pinteco coat (sample B – PZC = 27.2)
Sanding to 240-grit + 1 Mobil H coat (sample C – PZC = 33.1)
Sanding to 240-grit + 1 Nitrolux coat (sample D – PZC = 37.4)
Sanding to 240-grit + 3 Tampoval coats (sample E – PZC =33.5)
Sanding to 240-grit + 3 Teak Oil coats (sample F – PZC = 33.7)
Sanding to 240-grit + 4 BLO coats (sample G – PZC = 31.3)
Sanding to 240-grit + 1 Furniture Restoring Oil coats (sample H – PZC = 27.4)
Sanding to 240-grit + 3 Nitrocellulose coats (sample I – PZC = 38.0)
Sanding to 240-grit + 4 Acrylic spray coats (sample J – PZC = 35.8)
Sanding to 240-grit + 3 Medium Shellac coats (sample K – PZC = 35.2)
Sanding to 240-grit + 1 Epoxy coat (sample L – PZC = 32.6)
Sanding to 800-grit + Epoxy pre filling + sanding to 10’000 grit +1 Nitrolux Coat (sample M – PZC = 41.8)
Sanding to 240-grit + 1 Rubio Monocoat coat (sample N – PZC = 26.9)

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