[TCML] secondary coil form

[Carl Noggle <cn@xxxxx>]

Hey--

What does everybody use for a form for winding a secondary?  My 
secondary was (note the past tense) wound on a cardboard tube as a 
temporary measure, and as such things go, it has lasted for 20 years.  
However, an errant spark traveled between the wire and the cardboard in 
the little triangular air space between the end of the last paper turn 
and the wire, and that was the end of a long and illustrious career.

The coil was 12 inches in diameter and 30 inches long, and I would like 
to wind one about 10 to 12 inches dia by 36 inches long.  The obvious 
choice is PVC pipe.  What is everybody's experience with PVC, and is 
there something better in a reasonable price range?

Thanks much for the help.

---Carl
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