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RE: 3X Plates and Washers on Intermediate Anchors

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Windsor chairmakers use dry spindles and green seats so that as the chair 
reaches equilibrium the seat will grab the spindles. Besides being elegant 
in design, Windsor style chairs are among the most durable made. Maybe a 
hole boundary wants to shrink away from the original profile, but overall, 
it is governed by bulk shrinkage. Also, given that wood pretty much doesn't 
shrink axially, the hole profile will ovalize, not shrink uniformly.

Chuck Ritter
JAR Associates, Inc
401-294-4589
401-294-3826 fax


-----Original Message-----
From:	Gerard Madden, SE [SMTP:gmadden(--nospam--at)maddengine.com]
Sent:	Thursday, March 02, 2006 2:05 PM
To:	seaint(--nospam--at)seaint.org
Subject:	RE: 3X Plates and Washers on Intermediate Anchors

My first instinct was to think that the free edges of the wood move
toward the fibers behind it, the wood contracts when the water escapes
making the hole larger because those extreme fibers around the edge of
the hole are moving back to where there is more wood. I guess what your
saying is that the edges of the sill are shrinking at a greater rate
than the hole, that the overall shrinkage of the sill is such that it
surpasses the shrinkage of the hole fibers making the end result a
smaller/tighter hole diameter.

Sound right?

-gm

-----Original Message-----
From: Garner, Robert [mailto:rgarner(--nospam--at)moffattnichol.com]
Sent: Thursday, March 02, 2006 10:51 AM
To: seaint(--nospam--at)seaint.org; gmadden(--nospam--at)maddengine.com
Subject: RE: 3X Plates and Washers on Intermediate Anchors

Another analogy that helps visualize the shrinkage:  When you install a
ring gear on a flywheel, you heat it up to expand it, slip it onto the
flywheel, and when it cools, it shrinks in place and clamps the
flywheel.

  _____

From: Rhkratzse(--nospam--at)aol.com [mailto:Rhkratzse(--nospam--at)aol.com]
Sent: Thursday, March 02, 2006 10:46 AM
To: gmadden(--nospam--at)maddengine.com; seaint(--nospam--at)seaint.org
Subject: Re: 3X Plates and Washers on Intermediate Anchors

Wouldn't the holes *shrink* if the entire piece of wood shrank (shrunk?)
as it dried?
Ralph

In a message dated 3/2/06 9:26:18 AM, gmadden(--nospam--at)maddengine.com writes:


with shrinkage, the holes size will increase over time
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