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Topic: Measuring screen hole sizes. (3 msgs / 47 lines)
1) From: jim gundlach
I thought I calculate it rather than measure them.  I am willing to 
take McMaster-Carr at their word when the say a wire is say .0055 
inches in diameter.  If that screen has 42 wires per inch I would 
assume that the solid area in one running inch of screen would be 
42*.0055 or .231 inches.  And that the 42 holes, and I am assuming it 
would be 42 not 41, would take up the remaining .769 inches or would be 
about 18 thousandths of an inch across.  I don't know if it would be 
better to use width or area as a measure of hole size, any ideas?  
Anybody see anything wrong with this approach?  Once I get all the wire 
sizes, it would be simple to put the formula into RagTime and calculate 
them all.
Jim Gundlach
On Monday, December 16, 2002, at 07:22 AM, rev mark gilstrap wrote:
<Snip>
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2) From: Dan Bollinger
<Snip>
I see no problem with this approach. After all, you only have to get close
to evaluate a grinder.  Use width, since that is the limiting dimension. My
McMaster-Carr catalog shows the actual opening sizes for many of the
screening cloth materials.  Dan
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3) From: jim gundlach
On Monday, December 16, 2002, at 08:37 AM, Dan Bollinger wrote:
<Snip>
I know they are in the on-line version of the catalog but this 
household has three computers running off one airport hub that is 
connected by a phone modem.   I thought I would wait until I was in the 
office and use high speed access to pull up the pages again.  I had it 
all written down once but lost it when I cleaned up one of my many 
messes.
Jim Gundlach
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