From: "Good, Donald" 
To: atm{at}shore.net
Reply-To: "Good, Donald" 


Maybe I should have addressed this to Don Clement, but you asked if
anything was missed.  My point is that a 5/16 hole in a 3/8 rod leaves a
1/32 wall, but the threads on the 3/8 rod are deeper than 1/32 and
therefore must cut through the wall, leaving only the spiral thread.  So my
question was, if not 3/8, then what?


-----Original Message-----
From: Tom Krajci [mailto:tkrajci{at}san.osd.mil]
Sent: Tuesday, January 21, 2003 6:19 AM To: Good, Donald; atm{at}shore.net
Subject: RE: ATM Mirror collimator - coaxial push pull arrangement


>From: Good, Donald [mailto:dgood{at}aha.org]

>>I have assembled the graphics and comments of Don Clement that
describe
>>his coaxial push pull collimator.

>>See:
>>http://overton.tamu.edu/aset/krajci/cell-12-pt/coax-collimator.htm

>You mention 1/4" threaded rod and 3/8" threaded rod.  The 3/8 is
drilled
>lengthwise with a 5/16" hole to make a cylinder.  That leaves 1/16"
>difference or 1/32" per cylinder wall.  That surely cannot take 3/8-24
>threads.  Might it be 3/4" threaded rod?

I did not check dimensions to see what size threaded rod should/could work.
 My main interest was in displaying the overall design idea.  I hope I did
not lead anyone astray with the information that is portrayed on the web
site.

In your particular application, if you feel you need a larger diameter
threaded rod (inner and/or outer) for stiffness purposes...please feel free
to modify the design to suit your needs.

Tom Krajci
Tashkent, Uzbekistan


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