PSN-L Email List Message
Subject: Re: Curved strips of glass
From: "Charles R. Patton" charles.r.patton@........
Date: Tue, 19 Feb 2008 11:21:09 -0800
I thought I was only specifying a curve of 1000 inches, not 1000 feet.,
so back to about a 0.003 inch deflection in of a 6 inch long strip.
Anyway, I just went out to the garage with a microscope slide,
1.0x3.0x0.055", and supported the ends with Allen wrenches (a line
contact) and it deflected about 0.025" before breaking so that converts
to 0.0166" (16.6 thousandths) per inch -- well above the postulated 3 or
so mills for a 10 second curve.
> In a message dated 2008/02/19, charles.r.patton@........ writes:
>> One possibility would be to find a flat piece of standard window
>> pane, mount it, and provide tension screws to physically pressure it
>> into the desired curve. After all it
>> is only 0.001" in 1". I think glass would bend that much.
> Hi Charles,
> Much less than that. You specified a curve of 1000 ft,
> presumably the radius.
> If your strip is 6" long
> Center deflection = (0.25)^2 / 2000 x 12 inches = 0.000375"
> Chris Chapman
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