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Re: Beginner questions



Original poster: "Harold Weiss" <hweiss@xxxxxxxxxx>

Hi Tyler,

You can use THHN, but as its only 600V you have to watch the spacing to avoid flashover. #14 GTO is 15KV rated and works well in the charging part of the circuit. I use #4 welding cable for the discharge path, but again I have to be careful of spacing.

With your secondary, I bet you tried to feed the tubing thru all of its holes, and found it's a real pain in the butt. I would drill your holes, and then use a tablesaw to cut thru the top of the holes and then wind the coil by pressing it into the holes. The thin strips cut off, I would then use to hold the coil securely, and attach them with nylon screws.

Since you have a router, I'm going to send you a couple of pics offlist of a routed design in UHMW.

David E Weiss

Original poster: Tyler Pauly <rpggod714@xxxxxxxxx>

  Hello, I'm building my first coil. I have some
questions that only need to be asked once. They are:

1. What do you use to connect the "parts - aka the
capacitor, transformer, primary, etc.? Do you use
house wire (12 gauge)?

2. Do you have any words of wisdom on constructing the
primary? Mine will be 12 turns of .25 copper tubing
held by HDPE cutting board. They start at 6" diam. to
17". I originally planned for 6 supports, but not only
was it incredibly hard to "wind" it, but the glue
holding the plastic to the board support gave out. I
know glue wasn't the best idea, so I'm now routing
ruts into my board to slip the strips of HDPE into.
I'm kind of struggling. There's got to be an easier
way to this. Any ideas?

                         Thanks for the help,
                              Tyler