Reply by docholladay

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Posted on Pipe Clamps: 1/2-inch or 3/4-inch

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1287 posts in 3085 days

#1 posted 12-27-2010 04:30 PM

Definitely 3/4” for stiffness. Even 3/4” flexes some, I would think that 1/2” would really flex on any longer pipe lengths. The only drawback to Black pipe is that it will leave black stains on some woods (oak in particular). It is a reaction with the iron and the tannin in the wood. The solution is to either come up with a strategy to either keep the wood from being in contact with the pipe (I use pieces of foam pipe insulation to slightly space the wood off of the pipe) while still being able to be clamped securely in the clamp jaws. Also, I noticed that Rockler has a pipe available that is coated/plated to prevent this problem from occurring. I don’t know how durable it is though. It seems like whatever the coating is, might wear off after a while sliding the clamp up and down the pipe.


-- Hey, woodworking ain't brain surgery. Just do something and keep trying till you get it. Doc

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