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PostPosted: Sun Aug 02, 2015 4:56 pm 
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I recently bought some Pony 3/4" pipe clamps. In addition to the clamp head and tail, each package contained a circular coil spring about an inch in diameter and 1/4" tall. It's too small to fit over the pipe and is not at all like the spring in the tailpiece that tensions the clamp cams. What are these for?


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PostPosted: Sun Aug 02, 2015 5:04 pm 
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found the answer on the pony website. The extra spring is a "coil stop". Of course that's not very informative. Looking closely at the picture on the website, the coil stop threads onto the far end of the pipe to keep the tail from sliding off (not that I've ever had that problem in 35 years)


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PostPosted: Sun Aug 02, 2015 5:23 pm 
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'course they only work if you have pipe that's threaded on both ends. :)

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PostPosted: Mon Aug 03, 2015 6:24 am 
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Might be a minor thing, but that spring keeps the pipe off the table ever so slightly away from dripped glue?

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PostPosted: Mon Aug 03, 2015 6:49 am 
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You thread the opposite end so you can make longer clamps when you need them. The springs protect the threads from becoming unusable between uses.


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PostPosted: Mon Aug 03, 2015 10:17 am 
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NB George wrote:
You thread the opposite end so you can make longer clamps when you need them. The springs protect the threads from becoming unusable between uses.


Speaking of making longer clamps ...

There's an alternative to regular pipe couplers. New lengths of pipe are shipped with thread protectors that are much like regular couplers but have much thinner walls, thus aren't as likely to scuff the surface of your work. Check out a local full service plumbing shop. The one I've dealt with simply tosses these things since their not really meant to be used as real fittings but they work fine for our purposes.

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PostPosted: Fri Aug 07, 2015 9:21 pm 
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Duct Tape

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PostPosted: Fri Aug 07, 2015 10:15 pm 
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Not quite as terse as Tom's answer, but the wood you're gluing shouldn't be touching the pipes anyway, unless perhaps you're working with 8/4. I've got a couple of narrow boards, maybe 1.5" that I line up next to the outer clamps in a glueup. These hold the wood off the pipes and more importantly, center the glue-up on the axis of the screw threads insuring even force. It also leaves a little room to get in and wipe off any glue that has dripped onto the pipes. If I need to couple two lengths of pipe together, the thickness of a standard coupling still doesn't bring them into contact with the wood.


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