Filling copper tube with wax

Reflux still design and discussion

Filling copper tube with wax

Postby haydent » Tue Apr 14, 2020 11:53 am

Hi, just wanted to share my first attempt at putting wax in a length of 1/2 inch copper. I used soy candle wax as it has a low melting (and its what i had). so i can heat it easily high above that, and it takes more time to set. also its softer and not so brittle.

I had it running down hill warmed in the sun, with the bottom sealed. Pouring it in was held up by the air coming back out.

Next time i might try to keep both ends open, and suspend each at the same height, this way the air can escape the other end, and i can fill at no restriction, also it can be filled from both ends.

Also one could consider running a torch along the pipe to pre-heat the pipe further.

inspired by this thread : http://forum.moderndistiller.com/viewto ... =43&t=3177
Last edited by woodduck on Wed Apr 15, 2020 2:29 pm, edited 1 time in total.
Reason: OP wanted a few changes
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Re: Filling copper tube with wax

Postby woodduck » Wed Apr 15, 2020 10:09 am

I've heard salt does the same thing.

I think if you take your time and try not to bend too sharp you'll be fine without anything in the tube. I did a double coil in a 2" for my boka without too much trouble.

And remember if you work it too many times the copper will harden and may need reheating to annel it again.
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Re: Filling copper tube with wax

Postby haydent » Wed Apr 15, 2020 10:21 am

hey it worked fine after all, wax all the way the the end, no kinks, easily removed after about 10 mins in oven
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Re: Filling copper tube with wax

Postby db1979 » Wed Apr 15, 2020 10:22 am

Good work, got photos?
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Re: Filling copper tube with wax

Postby haydent » Wed Apr 15, 2020 10:32 am

This is my first ever coil,

IMG_20200415_102457.jpg
IMG_20200415_102443.jpg
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Last edited by haydent on Wed Apr 15, 2020 10:36 am, edited 1 time in total.
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Location: NSW
equipment: nope, just beginning

Re: Filling copper tube with wax

Postby haydent » Wed Apr 15, 2020 10:35 am

This pulley you can get from bunnings and is a perfect fit for 1/2" tube

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