Woodworking Plans Review

2 Responses to “What are the usual cross-sectional dimensions for 4", 6" and 8" Jorgensen type woodworking hand screw clamps?”

1. 
   thewrangler_sw Says:
   28. July 2010 at 9:38 am

   Depends on how old they are, hehe…

   I find that most of the ‘modern’ clamps are made of kiln dried lumber, as opposed to ‘green’ and thus are slightly smaller than the more ‘antique’ models.

   By "cross-secton" I assume you are looking for the measurement of the clamp itself, and not just what it will hold.

   A typical jaw is made of, approximately, 1 3/4" stock x 2 1/2" thickness, and the length of the jaw, is usually about double of the ‘clamp length’ .. .so if it says the jaw length is 8 inches, then the overall length, to include the handle screws would be about 16". Oh, and the ‘length’ of the jaw is usually about double the ‘clamp size’…. so if its a 4" opening, the length is about 8", and the overall length of the jaw piece is, again, 16"

   That forward screw is about the centerline of the jaw piece.

   Here is a pic – http://www.rockler.com/product.cfm?Offerings_ID=5335&TabSelect=Details

   And here is a chart on the sizes of "Jorgensen" brand hand screws – http://www.adjustableclamp.com/handcat1.htm

   I know that these are a fun shop project, and handy too, hehe

   Have Fun

2. 
   DIY Doc Says:
   28. July 2010 at 9:38 am

   Forgive this. It’s been so long since I did that kind of work; but I want to assume to mean the maximium JAW opening?

   I then want to assume the 4/6/8 is the max for the stock it will clamp, not strictly the jaw opening; which might allow fractions oof inches beyond the 4/6/8.

   This is a great example however about why I most use larger than I need, and so often Galvanized pipe and clamps that attach; allowing more flexibility, OR SLIP TYPE clamp hardware, and even pieces of scrap stock at the face of each clamping piece of hardware to not "bruise" the pieces of stock I’m putting together.

   Steven Wolf

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