Comments on: Thompson Mahogany Company Merges with East Teak Fine Hardwoods, Inc. http://blog.eastteak.com/index.php/2009/10/thompson-mahogany-company-merges-with-east-teak-fine-hardwoods-inc/ Exotic Hardwood Information and Discussion Fri, 31 Dec 2010 20:41:03 +0000 hourly 1 http://wordpress.org/?v=3.1.3 By: Matt Mladenka http://blog.eastteak.com/index.php/2009/10/thompson-mahogany-company-merges-with-east-teak-fine-hardwoods-inc/comment-page-1/#comment-11 Matt Mladenka Tue, 17 Nov 2009 17:51:36 +0000 http://blog.eastteak.com/?p=163#comment-11 The best document that I can send you to for these coefficients of dimensional change (I'm assuming for flooring) is here: http://www.fpl.fs.fed.us/documnts/fplgtr/fplgtr113/fplgtr113.pdf p. 297 This table does not contain Sapele, however it should fall somewhere between Teak and Mahogany. Teak’s tangential coefficient is .00186 and Mahogany’s tangential coefficient is .00238. So assuming a 3% moisture change on a 5” face, here’s the range in inches: Teak: 3 x .00186 x 5 = .0279 inches Mahogany: 3 x .00238 x 5 = .0357 inches As a reference, 1/32 of an inch is .03125. The table also does not differentiate between flat sawn and quarter-sawn, although quarter-sawn is generally more stable. If anyone knows the exact coefficient for Sapele, please post! The best document that I can send you to for these coefficients of dimensional change (I’m assuming for flooring) is here:

http://www.fpl.fs.fed.us/documnts/fplgtr/fplgtr113/fplgtr113.pdf

p. 297

This table does not contain Sapele, however it should fall somewhere between Teak and Mahogany. Teak’s tangential coefficient is .00186 and Mahogany’s tangential coefficient is .00238.

So assuming a 3% moisture change on a 5” face, here’s the range in inches:
Teak: 3 x .00186 x 5 = .0279 inches
Mahogany: 3 x .00238 x 5 = .0357 inches

As a reference, 1/32 of an inch is .03125.

The table also does not differentiate between flat sawn and quarter-sawn, although quarter-sawn is generally more stable.

If anyone knows the exact coefficient for Sapele, please post!

]]> By: Jane Henderson http://blog.eastteak.com/index.php/2009/10/thompson-mahogany-company-merges-with-east-teak-fine-hardwoods-inc/comment-page-1/#comment-8 Jane Henderson Tue, 10 Nov 2009 21:24:19 +0000 http://blog.eastteak.com/?p=163#comment-8 Hi! What is the expanison ratio for quarter-sawn sapele? Hi!

What is the expanison ratio for quarter-sawn sapele?

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