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Author: Subject: Correct clamp for the job?
cyanureeves
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[*] posted on 15-4-2012 at 18:01


thanks tanker my joints glide smoothly also when greased.last time i made nitric ,a leak ate one of my clips at the flask over the burners but sealed itself again.i have silicone bands i ordered on line,they came in shapes of different zoo animals.i might just have to strap a hippopotomus on the joints if i run out of clips.
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m1tanker78
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[*] posted on 17-4-2012 at 11:31


Reeves, let's not resort to animal cruelty when making nitric acid :D

It's my understanding that you shouldn't clip the boiling flask unless your crude stuff is low boiling. Also, you may have applied too much grease to the joint(s).

Quick question: What's the best way to remove silicone grease from glassware joints after use?? Soap and gentle scrubbing doesn't seem to work as well as I had hoped.

Tank




Chemical CURIOSITY KILLED THE CATalyst.
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Hexavalent
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[*] posted on 17-4-2012 at 11:58


I have always found that dabbing acetone on a paper towel and simply wiping the joint works well, followed of course by cleaning the item in hot soapy tap water, then with fresh tap water, and then a final rinse in distilled water.



"Success is going from failure to failure without loss of enthusiasm." Winston Churchill
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Pyro
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[*] posted on 30-4-2012 at 09:56


i personally use a standard clamp with rubber hose over the fingers, and i make my own stands as they cost a lot.
i buy a 1 metre long steel rod of the right diameter, and a 3/4 inch steel plate. i drill a hole in the plate and put threads in it, put threads on the rod and screw them together, it costs almost nothing.




all above information is intellectual property of Pyro. :D
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Hexavalent
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[*] posted on 30-4-2012 at 13:43


I like that idea, Pyro. I suppose if you had the required materials and equipment, you could weld the metals together for extra stability. I also like to install, on the base of my stands, some of those little rubber feet you can get from the pound/dollar store or supermarket. They help stop the stands from sliding on my laminate workbench, and help avoid scratching it unnecessarily too.



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Pyro
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[*] posted on 30-4-2012 at 18:13


well,
I live on a boat where there is loads of equipment.
truly, the threads fit together perfecty, and because storage space is a problem i can just unscrew and store them.
i glued a sheet of rubber to the bottom :p
to buy new costs 45$ and is just plain steel, mine are stainess.
i know that problem hex, when i worked on painted steel they used to slide around like crazy, i used to hot glue them down :)




all above information is intellectual property of Pyro. :D
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Hockeydemon
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[*] posted on 27-2-2013 at 06:14


I really need to get a few clamps, rings and stand, but once again on my poor budget I am hesitant to buy anything I can make..

I think I would be pretty happy with a couple of the stands M1Tanker put together. What did all of that total to if you happen to remember?

I really wanted to build clamps also but I haven't figured out how to properly attach the rotating arm..

Rather than use the beam clamps as M1tanker did I found Gampak .5" rigid clamps which have a screw whole on all sides so you could attach two of them at the back to effectively make a bosshead without needing a welder.



This would then grab the base rod and a 6" steel rod with a 1/4" diameter going to the clamp.

I would then pre-drill a hole in the 6" rod's center so I can thread this two arm hanger into the rod for the stationary portion of the clamp.



Then I could wrap a 2 hole pipe strap around the 6" rod which would give me a pivot for the adjustable arm. Maybe drill a hole through the middle of the strap & rod to prevent the strap from ever moving.




Now then I need to find an acceptable movable arm.. Maybe just offset the same arm I found already for a 4 arm clamp?

I was thinking I'd screw this into the side of the 6" rod, and then drill a hole from the adjustable arm to this piece and run a fly nut to tighten everything down?



Hopefully I communicated this well enough.. I had started to draw up schematics, but I draw like a disabled child.

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