@all

I got a feeling that the battery coil and secondary are wound in opposite direction.

Mark

Thanks for the picture of the wire.  Now, is that cotton or some kind of blend?  Almost looks silky, doesn't it?  How much did you buy and how much did it cost you in total if you don't mind my being nosy.  Just want to know whether or not I can afford it.  How much would you need for a large coil such as the one Stubblefield has laying on the ground in front of his box of batteries in this photo?  See the white one in left front?  (in front of the box)  That is about the size of my last coil...maybe a little smaller.

It might be fun to make a five gallon huge coil, but I am thinking it might be better to make several smaller ones and hook them together.  More convenient, AND wouldn't the smaller ones be subject to a greater amount of  earth currents than one huge coil? 

I will be very happy to have one that works well.
Later on I can make 2 or a bigger one, but that is the way I am.
With the cotton already there, it will be possible to count the turns.
and, that means the secondary can be longer than the primary! .
This is really pretty exciting.

What I like about that close up is how close to the wire the cotton is.
It looks a little shiny but it is probably cotton.
Once it is mercerized cotton becomes shiny.
Before that there is a wax on it that makes it look dull, but I think this is on the crafts market and I bet the choice was made to make it shiny.
Now, that is a good thing.
It looks less absorbent, but it is actually more. (unless treated with acrylics and formaldehydes etc.)
ooo this is so cool

thank you,

jeanna

@ Lasersaber,
That is a very good find, locating the place that sells cotton covered wire, how much did this drum cost you if this isn't a rude question?
And, what is its thickness? How many feet do you get on a roll?
Sorry for all the questions.

One things for sure, cotton shrinks when it gets wet, so coils might get a little sloppy after a while.

When you wind every layer, don't forget to cover the previous layer of winds with an insulator, cut the top section off a thin cotton sock would do the job, or a small pair of nylon stockings.

The first person who makes a "running" stubblefield coil is going to be king of the stubblefield mountain.

@Bill,
That package of diodes and geranimum transistors I sent to you last week, have you received it yet?

jim