Bending 1/4" copper..?
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Bending 1/4" copper..?
I was just trying to bend a tight coil of 1/4" copper tubing for the cooling section of a Mini Still column.
Tried to wrap it around a broom stick, and end up with the perfect diameter to slip inside a 1 1/2" copper column. I created a few spots that will restrict water flow more than I'd like so I stopped before I destroyed it all.
Are there any tricks to bending it without kinking? Can it be done without a spring?
Tried to wrap it around a broom stick, and end up with the perfect diameter to slip inside a 1 1/2" copper column. I created a few spots that will restrict water flow more than I'd like so I stopped before I destroyed it all.
Are there any tricks to bending it without kinking? Can it be done without a spring?
Check out Related Hardware and Appurtenances
Related Hardware and Appurtenances has a sticky about winding a coil. Some great advice from Pintoshine and really good photos of a simple jig. You should also view Hookline's photobucket .I think his photobuck is listed under Sinker 2007. He has fine way of reducing back pressure with a parallel wind and spacing between the loops.
Good luck to you
Good luck to you
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I haven't tried this yet, but since I work in an industry where hydraulics are used every day, this seems to make sense to me.
The basic principle behind all hydraulic jacks, etc., is that liquids cannot be compressed. Therefore, to bend a copper coil without kinking it, fill it with water, seal off both ends, and bend away. This can be done by attaching the appropriate compression fittings that you are eventually going to use on your condenser. After bending, simply disconnect the fittings, and there you go!
Attaching your 1/4" copper to a tap and filling with water seems a lot easier than trying to fill it with salt or sand, and then flushing it out.
Just my opinion, I could be full of shyte.
The basic principle behind all hydraulic jacks, etc., is that liquids cannot be compressed. Therefore, to bend a copper coil without kinking it, fill it with water, seal off both ends, and bend away. This can be done by attaching the appropriate compression fittings that you are eventually going to use on your condenser. After bending, simply disconnect the fittings, and there you go!
Attaching your 1/4" copper to a tap and filling with water seems a lot easier than trying to fill it with salt or sand, and then flushing it out.
Just my opinion, I could be full of shyte.
Neither liquids nor gases will stop tubing from distorting... They will only be displaced to other areas and the pressure will increase equally across the entire sealed area as the tube compresses in the same manner as if the tubing was empty... The same effect will happen even if the contents of the tubing is under pressure... Physics and fluid dynamics at work...
That salt filled tube did the job -super slick ! I wrapped 6 ft. of 1/4" copper around a 1/2" rod. Then did a return coil over top the inner coil.
It worked out beautifully, and has absolutely no room to wiggle when slipped inside a 1 1/2" column.
I filled the tube with salt, and did the double wrapping in about 30 minutes. It took me another 4 hrs to get the salt out. Next time I will try to tap the salt out before flushing it with water. I finally made a fitting for my air compressor, and with 90 psi, blew it clear. -don't think I would try sand on a tight coil...
It worked out beautifully, and has absolutely no room to wiggle when slipped inside a 1 1/2" column.
I filled the tube with salt, and did the double wrapping in about 30 minutes. It took me another 4 hrs to get the salt out. Next time I will try to tap the salt out before flushing it with water. I finally made a fitting for my air compressor, and with 90 psi, blew it clear. -don't think I would try sand on a tight coil...
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made 3 sand coils. The sand has to me very thin and dry. And even then it takes about one hours playing with the coil to get the sand out.Tideliner wrote:That salt filled tube did the job -super slick ! I wrapped 6 ft. of 1/4" copper around a 1/2" rod. Then did a return coil over top the inner coil.
It worked out beautifully, and has absolutely no room to wiggle when slipped inside a 1 1/2" column.
I filled the tube with salt, and did the double wrapping in about 30 minutes. It took me another 4 hrs to get the salt out. Next time I will try to tap the salt out before flushing it with water. I finally made a fitting for my air compressor, and with 90 psi, blew it clear. -don't think I would try sand on a tight coil...
Don't use Sugar!! Hell, I wouldn't even use salt now. Anything that will absorb water might not be the best idea, ie. salt, sugar, etc. Sand might be the best thing. You could also wear thick gloves and gently heat it up with a torch, then slowly and gently bend it without anything inside. Then move on down the line. Cool it off before touching it.
Shine on you crazy diamonds!!
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