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Re: NEON- Neon Coils
On 08/29/96 03:04:13 you wrote:
>
>Does anyone have a trick for this? I have been fighting for a week trying to
>make a 2" diameter by 4" long neon helical coil, in other words something
>like a spring. I have tried using the usual glassblower's technique of
>winding it on a metal mandrel, then wrapping asbestos on it, and each time I
>get it, I can't slip if off the mandrel. It's stuck on it and won't come off.
>I am considering using a graphite mandrel, but don't know if it's worth the
>tooling expense.
>Of course, Dirk, you can tell us with some pride that your pyrex tubing
>followed by annealing and phosphor coating of the finished product is a
>perfect and simple way to do this. My glassblower can make coils for lab
>condensors all day long out of pyrex but he can't make it in lead glass. You
>would be right. But we're over here.
>Anyone have any suggestions on this? Hate to turn this job back.
>Jeff Golin
>
>
>
Do it Free Hand...No Mandrel.
Peace
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