Re: [TCML] Winding the primary

[Quarkster <quarkster@xxxxxxx>]

Steve -
   
  What is your primary conductor? If you're using copper tubing, here are a few tips:
   
  1. Use virgin refrigeration tubing, and leave it in the coiled shape that it comes in. Don't try to re-use "salvaged" tubing if you want a nice looking primary. Copper tubing "work-hardens" and stiffens very rapidly as you deform it, so deform it as little as possible.
   
  2. DO NOT try to straighten the tubing, then re-form it into a spiral. The tubing will work-harden, then is likely to kink and become unmanagable.
   
  3. Have an assistant hold the coil of tubing about a foot above your primary forms, and just let one coil drop down at a time. The typical diameter of a coil of rerfigeration tubing is around 18", so I start at the end of the primary that is closest in diameter to the diameter of the coil of tubing. For a small diameter primary this means starting at the OUTSIDE of the primary form and wind inward. For a large diameter primary, this means starting at the INSIDE of the primary form and winding outward. This way the tubing requires minimum deformation initially, and then must be gradually formed into a larger or smaller radius as you move outward or inward.
   
  Regards,
  Herr Zappp
  

"Stephen J. Hobley" <shobley@xxxxxxxxxx> wrote:
  We just realized that we can't get the primary wound into the standoffs without some major kinking. 

Is there a trick to winding the copper tubing into the standoffs with the minimum of distortion? 
It's proving to be harder than we first thought.

Steve

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