Re: [TCML] Primary

[nancylavoie@xxxxxxxxxxx]

Hi, It's a little late now  to try what I'm going to suggest but maybe next time... First off  my primary forms are made from heavily sealed wood ( it's pretty easy to work with as well as easy to come by!). It doesent really matter how you design the form just be sure to leave access for your primary tap.I've built a primaries similar to the design you've chosen and  I've also built my  primary on a huge wooden disk with cutouts for the tap at various places around the diameter. So, lets say you were to go with a form like the one you've already built ( same basic design, just cut from wood pieces).Now, where you are using the drilled PVC and ty-wraps, you would fasten your  tubing with small coaxial cable tacks (they sell these at Home Depot for a few bucks @ 100 or something). The first turn is kind of a pain  until you get a couple tacks in it but after that its smooth sailing. As you are winding  simply use one of the tacks with the small nail pulled out as a spacer to perfect
ly space each turn as you go. I should note that this only works with the smaller sized tubing and you may have to use something else as a test spacer if you want a larger spacing between turns. Works really good  and the result is a pretty much pefectly spaced coil with a nicely finished look to it if you take the time to line the tacks up nice and straight along the from supports. Some may suggest that the small nails may present a problem with arcing etc. but I've experienced no problems yet with many hours on the primaries I've built this way.   Wyatt

-------------- Original message -------------- 
From: "Tim Meehan" <btmeehan@xxxxxxxxx> 

> I had trouble winding a primary too - one thing that I did to put mine 
> together out of heavy gauge wire was to use wax lacing cord to tie the 
> conductors together. I used solid insulated conductor (AWG 4 or 5 ... don't 
> know for sure). I just made the inner radius of the flat coil and then tied 
> the conductor to the coil every few inches. I think that you can get the 
> wax lacing cord at a few online electronics places. 
> 
> On Nov 14, 2007 7:51 PM, Clive Hansen wrote: 
> 
> > Hello, 
> > I am building my first coil and am pretty far along in construction. 
> > So far I am using a 15kv 30ma nst to drive the coil. I have build a 
> > bottle cap which I calculated to be around 8nf. I have a static gap and 
> > am going with a 13 turn primary and a 1100 turn 4 inch diameter 
> > secondary with 24 gauge wire. My question is this: Can the primary be 
> > wound with 14 gauge house wire? I had quite a few difficulties winding 
> > one out of copper tubing. 
> > 
> > -Clive 
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