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post #21 of 40 Old 02-01-2017, 08:16 AM
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Quote:
Originally Posted by Rodrat View Post
The bar clamps from HF twist I've learned. It's not to keep them from bending, it's to keep them from twisting sideways which they do just by touching them. No tightening required.

Making them more ridged insures the clamping surfaces stay parallel.
Somebody has been giving you some bad information. Or if this did happen then the clamps were being improperly used.

George
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post #22 of 40 Old 02-01-2017, 08:19 AM
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Originally Posted by mmwood_1 View Post
I mostly use the Jorgenson Pony pipe clamps. Mostly 3/4", but I have a few 1/2" that come in handy, mostly on lengths under 3'. Some of my most used clamps are the Jorgenson 12" bar clamps, which I use to hold things down a lot, or clamp short distances where a pipe clamp won't get into. Stay clear of any plastic clamps, they won't last.

As regards staining, the black pipe clamps will defintely stain the wood if there is contact to the wood with even a little bit of glue squeeze out in that spot. Wax paper is a good barrier.

Regarding clamping pressure, that really depends. If you are glueing up a butcher block style counter, for instance, and it's 25" wide and composed of 24 seperate boards, you actually need to put quite a bit of pressure on the clamps in order to transfer enough pressure to the inner joints.
" you actually need to put quite a bit of pressure on the clamps in order to transfer enough pressure to the inner joints. "

The same pressure is on inner parts as it is on outer parts. There is nothing in the mix that causes a reduction of pressure. If the parts are first properly fitted then all joints should go together at the same time.

George
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post #23 of 40 Old 02-01-2017, 10:20 AM
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I just finished re-gluing a drawer for our antique secretary (made of wood, not some little old lady). I used the long HF clamps and have had no trouble with them. I also have some of the orange/black clamps. A couple of them slip if you tighten them too tight. Trick is, as mentioned, you don't need a lot of pressure for gluing wood.

A diamond is how coal reacts under pressure.
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post #24 of 40 Old 02-01-2017, 12:18 PM
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If you need to put so much pressure on the wood to bend the clamps to get a proper joint, you might need to work on your joinery
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post #25 of 40 Old 02-01-2017, 01:06 PM
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Originally Posted by GeorgeC View Post
Somebody has been giving you some bad information. Or if this did happen then the clamps were being improperly used.

George
I dont know. Just from my own personal use, the smallest turn of the handle causes them to sway.

Measure 6 times, cut 3. Plane it down wrong and go buy a second board.
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post #26 of 40 Old 02-01-2017, 01:09 PM
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Originally Posted by Rodrat View Post
I dont know. Just from my own personal use, the smallest turn of the handle causes them to sway.
You need to work on your technique.

By the way, what does "sway" mean?

George
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post #27 of 40 Old 02-01-2017, 01:16 PM
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Originally Posted by GeorgeC View Post
You need to work on your technique.

By the way, what does "sway" mean?

George
What I mean is it tries to spiral and twist as I touch it.

It could be that I just have a particularly bad one or something.

Measure 6 times, cut 3. Plane it down wrong and go buy a second board.
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post #28 of 40 Old 02-01-2017, 01:41 PM Thread Starter
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OK clearly there are some issues regarding either the use of certain clamps or quality control from the manufacturer. The ratcheting clamps I have work well for their uses. I have 1 or 2 from different brands that just suck in comparison to the others. Moot point. I wanted to gather information on clamp choices and I got it. Thanks for all the advice and tips from your experiences.
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post #29 of 40 Old 02-01-2017, 10:07 PM
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Quote:
Originally Posted by Rodrat View Post
What I mean is it tries to spiral and twist as I touch it.

It could be that I just have a particularly bad one or something.
It must be "haunted." Or at least have some type of alien force acting upon it.

On the other hand, if you are trying to use only one hand to tighten it your technique is the problem. Those aluminum clamps are inherently light. When you try to turn the handle to tighten the screw there is no large angular inertia(cuch as there would be on heavy iron clamps) to keep them stable.

If you are right handed you have to use your left hand to hold the clamp steady until you have at least slight clamping pressure.

Use them correctly and you will have no problem.

George
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post #30 of 40 Old 02-12-2017, 03:39 PM Thread Starter
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regarding marking wood, does anyone else strip the coating with paint thinner first? Or paint the metal even?
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post #31 of 40 Old 02-12-2017, 06:35 PM
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I bought the pipe clamp ends, with feet - and use 3/4 aluminum electrical pipe/conduit.
no rust, light weight. $10 for a 10 ft length - cheaper than black iron at HD!

clamp ends get a really good / quick / easy bite - that's the one downside - now and then I have to file down the dings for smooth action. but the ease of handling makes up for that.
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post #32 of 40 Old 02-12-2017, 08:18 PM
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regarding marking wood, does anyone else strip the coating with paint thinner first? Or paint the metal even?
I was just downstairs unclamping a glue up. The black iron pipe I have is just like it came from the store. I noticed some of the pipes I have for extensions have what looks like a clear coating on them. All of the pipes that are mounted on the Pony head ends are not. I have four units that were inherited from my Father-In-Law and they are showing some faint rust as they were stored in his garage. I'll probably give them a rub down with a non-woven pad and a coating of wipe on varnish the next time I finish a piece. These pipes are well over 20 years old, so I'm not worrying about their condition. I also don't worry about glue marking as I don't let that situation occur.

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post #33 of 40 Old 02-13-2017, 02:13 AM Thread Starter
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I picked up some Bessey clamps. Simple red spray paint will cover my pipes and I never will have to worry about staining or rusting.
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post #34 of 40 Old 02-13-2017, 07:17 PM
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Quote:
Originally Posted by Rodrat View Post
What I mean is it tries to spiral and twist as I touch it.

It could be that I just have a particularly bad one or something.
When your tightening is the thread and cap spinning together or independently?
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post #35 of 40 Old 02-13-2017, 07:46 PM
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Originally Posted by Rodrat View Post
What I mean is it tries to spiral and twist as I touch it.

It could be that I just have a particularly bad one or something.
WOW!!!

You must have some touch!!!

George
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post #36 of 40 Old 02-13-2017, 09:31 PM
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Originally Posted by Catpower View Post
If you need to put so much pressure on the wood to bend the clamps to get a proper joint, you might need to work on your joinery
Bend what kind of clamp?
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post #37 of 40 Old 02-13-2017, 11:10 PM
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All but the 4 in the back are HF clamps and only 2 of the HF needed stiffening. The other 4 pipe clamps are from cripes distributing, Irwin type that do not require threading, just straight 1/2" pipe and they've never slipped.
I've never run into a problem with any of these except one of the bar clamps sticks in one of the acme threads a tiny bit. Someday I might get around to filing it down a hair when the moon comes over the mountain or something like that..
If you have a bunch of cash just burning a hole in your pocket by all means go pay the extra for the Cadillac of clamps, but...I kind of doubt I would even if my dad suddenly tells me he has a rich brother who only loves me and has one foot in the grave and the other on an old rotten banana peel.

I figured it's time to change my signature so hold your breath. This is it.
Impressive, huh?
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post #38 of 40 Old 02-14-2017, 02:05 AM
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Originally Posted by Rebelwork View Post
When your tightening is the thread and cap spinning together or independently?
Could you elaborate on that? Not quite sure what you mean.

Measure 6 times, cut 3. Plane it down wrong and go buy a second board.
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post #39 of 40 Old 02-15-2017, 03:13 PM
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Originally Posted by Rebelwork View Post
Bend what kind of clamp?

Pretty much any clamp, if you do a good job of jointery it doesn't take a whole lot of pressure to get good glue squeeze out
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post #40 of 40 Old 02-15-2017, 07:59 PM
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Last edited by Rebelwork; 02-15-2017 at 08:29 PM.
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