| [GMCnet] GMC Plywood floor thickness. [message #289555] |
Tue, 27 October 2015 19:42  |
glwgmc
Messages: 1014
Registered: June 2004
Karma:
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Actually it is all metric now. 18mm (0.71) is a bit less than 3/4” and 20mm (0.78) is a bit more. No intent to fool anyone, just to standardize sizes around the world. In the US they just round up to 32nds or even 64ths to get inches. In tools these days most all are built to a metric standard and then marked in inches for the US market. Lead screws are changed to produce inch movements but that is about all. All we need to do is follow the rest of the world and ditch this screwy inch business….. It is sooooo very much easier and far less error prone to work in metric.
Jerry
Jerry Work
The Dovetail Joint
Fine furniture designed and hand crafted in the 1907 former Masonic Temple building in historic Kerby, OR
glwork@mac.com
http://jerrywork.com
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Message: 8
Date: Tue, 27 Oct 2015 14:38:37 -0600
From: RC Jordan
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] GMC Plywood floor thickness.
Message-ID:
Content-Type: text/plain; charset="utf-8"
Keep in mind that modern plywood has been converted to 'nominal' sizing --which translates to "they've shaved a couple of mm off of it but still call
it 3/4." In the building trades, a sheet off tar paper is required to level a butt joint between old and new.
--
77 Royale Coachmen Side Dry Bath
76 Birchaven Coachmen Side Wet Bath
Elizabeth City, NC
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Jerry & Sharon Work
78 Royale
Kerby, OR
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