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Wood Shop and Projects

Dating Older Plywood Chests - Actual 3/4" Thickness Ply

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Old 11-19-2017, 02:48:42 AM
tabbyapple tabbyapple is offline
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Default Dating Older Plywood Chests - Actual 3/4" Thickness Ply

I have three massive 40" x 24" hinged chests each weighing over 45 pounds. The top hinged lid and fixed bottom are made from 3/4" thick plywood with dado edges for the 3/4" thick wood plank sidewalls. Each case has a outer glossy finish, hinges, latch, and metal sliders on the bottom (one with steel ball bearings). Research indicates that these were made by a WWII veteran to store linens. Darkened 1955 newspapers were used as packaging around some items, thus I think they were likely made in the 1945 to 1955 time frame.

I know the actual dimensions of wood products have gradually decreased in size over time but was wondering if there was a general time frame when 3/4" plywood was decreased in thickness. Perhaps they might be made from a special grade of plywood that retained the 3/4" actual thickness verses regular construction plywood.

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Old 11-24-2017, 07:34:13 PM
tdmidget tdmidget is offline
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Default Re: Dating Older Plywood Chests - Actual 3/4" Thickness Ply

Cabinet grades ( which yours appears to be ) and marine grades are on the nominal size. Construction grades are undersized.
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