1 / 7

Conversion

Timber. Conversion. What name is given to this defect? Can you name each of the defects to these converted boards below. Manmade Timber Defects. __________________. __________________. __________________. __________________.

brita
Télécharger la présentation

Conversion

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Timber Conversion J.Byrne 2013

  2. What name is given to this defect? Can you name each of the defects to these converted boards below. Manmade Timber Defects __________________ __________________ __________________ __________________ J.Byrne 2013

  3. Waney edge : Converted timber having one or more edges not square or containing bark. Badly stacked boards: Can result in Manmade Timber Defects Cupping Twisting Springing Bowing J.Byrne 2013

  4. Seasoning Timber Defects • What is Honeycombing? • What is Collapse? • What is Case Hardening ? • How do End splits occur? J.Byrne 2013

  5. Seasoning Timber Defects • Honeycombing : internal splits due to incorrect Kiln seasoning. • Collapse : Timber is dried too quickly water is sucked out before air has a chance to fill the cell and the cell walls collapse. • Case Hardening : The inner core remains wet while the outer case dries and hardens. • End splits : Untreated ends of timber will split from Moisture evaporation. J.Byrne 2013

  6. Name These Timber Defects (a) (b) (c) (d) (f) (e) (g) (h) J.Byrne 2013

  7. Name These Timber Defects (a) Wandering Heart (b) Star Shake (c) Radial Shake (d) Heart Shake (f) Thunder Shake (e) Cup Shake (g) End Splits (h) Waney Edge J.Byrne 2013

More Related