Using grommets to create additional leakage/creepage distance is clever! I
never would have thought of that!
Best is to turn the material on a lathe, but in a pinch you can use a bolt as a
mandrel in a drill press and do it that way. Not as nice, but lots more people
have drill presses than lathes.
-Bill
> That problem can be cured with rubber ribs, or by using a larger insulator and
> turning ribs or skirts in it. Next time, just find rubber panel grommets
> that fit tight and string them over the rod. They make shrink to fit
> sealing grommets that are 5" OD. They make dandy skirts, or you can
> improvise with other materials like you did.
>
> They put polymer ribs over fiberglass rod insulators for good reason. :-)
>
> http://www.victorinsulators.com/polymerindex.htm
>
>
> 73 Tom
>
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