Iâ??m not sure where youâ??re buying from, but 8 oz of 28awg magnet wire, 155C
polyurethane insulation, is a whopping $14.14 straight from Remmington
Industries. Manufacturer is Elektrisola.
That size was just over the amount I needed to wind my 3.5â?? x 16â?? coil.
If you want the heavy-build wire, thatâ??s $1 more, and you get about 10 ft
less.
If you want to go all the way up to the 240C polymide insulation, that goes
up to $38.41â?¦ but no one in any reading Iâ??ve done has ever given any
indication that is necessary.
Iâ??ve still spent more money on my CDE caps than all the magnet wire I have
combined.
On Tue, Nov 23, 2021 at 11:25 PM <pupman.com@xxxxxxxxxxxxxxxxxxx> wrote:
> The fancy toroids have problems too, mostly cost, availability and then
> they're heavy and completely overkill from a mechanical perspective. I
> guess they do look cool compared to everything else.
>
> Has anyone done a "bulk buy" of these recently? The shop that made mine
> went defunct long ago.
>
> I can wind pretty much any size coil that can be reasonably shipped or
> picked up from the Chicago area. You might be in for a surprise though
> when it comes to the price of materials alone. Magnet wire comes in 5
> pound spools and up Even these are basically considered sample sizes. I'd
> never buy respooled ebay specials. If the wire doesn't have a wrapper from
> the manufacturer you don't know how knotted up it is, who made it or why
> it was rejected in the first place. PVC drain pipe isn't too bad,
> fiberlgass tubing is tens of dollars a foot now. hardware store
> polyurethane varnish is cheap (and works fine), fancy engineered coatings
> are not. Most of the good stuff is not compatible with PVC either. The sky
> and your wallet are the limit. If anyone wants to to throw money at
> problems, you can contact me directly. I'd save the money for a frequency
> generator though.
>
> My first secondaries were garbage and have to be redone multiple times.
> Same for the person who got me started in coiling. The best was the coil
> what was wound before realizing the magnet wire was just really old bare
> wire with a patina that had no varnish insulation at all. Other rediculous
> attempts were trying to use actual transformer varnish from a transformer
> factory.
>
> Your first coil works, so that's always a plus. It only gets better from
> there as you refine your design and constuction techniques.
>
>
>
> On Tue, 23 Nov 2021, Joshua Thomas wrote:
>
> > Thank you!
> >
> > My topload is covered with copper foil. The base is dryer tube. While
> > cheap, it is difficult to get a strongly smooth surface from it. I am
> > jealous of those who can get the smooth spun-aluminum toroids.
> >
> > On the topic, can anyone recommend a service that will create secondary
> > coils to specification? I am fairly bad at this and it?s one area I would
> > be willing to spend a little money.
> >
> > Joshua Thomas
> >
> > On Tue, Nov 23, 2021 at 10:20 AM <pupman.com@xxxxxxxxxxxxxxxxxxx> wrote:
> >
> >> Hi Joshua,
> >>
> >> The arcs look and sound great in this video. They grow and move vs.
> >> appear once and vanish. It does looks like there may be too many
> >> breakout/sharp points on the toroid though, and lots of energy is being
> >> lost. A light wrap of foil might smooth things out enough to allow
> >> fewer, but longer and more developed streamers.
> >>
> >>
> >> On 11/21/2021 4:03 PM, Joshua Thomas wrote:
> >>
> >> <content trimmed>
> >>> These were used with 3 between each HV rail and RF ground. The caps
> >> caught
> >>> on fire after short use. You can see video of that event here:
> >>> https://youtube.com/shorts/Sx_lHwjR_bs?feature=share
> >>>
> >>> (I should likely have shut this down sooner)
> >> <content trimmed>
> >> _______________________________________________
> >> Tesla mailing list -- tcml@xxxxxxxxxxxxxxx
> >> To unsubscribe send an email to tcml-leave@xxxxxxxxxxxxxxx
> >>
> > --
> > Joshua Thomas
> >
> > My new email address is: joshuafthomas@xxxxxxxxx
> > Please update your information if you have not already done so.
> > _______________________________________________
> > Tesla mailing list -- tcml@xxxxxxxxxxxxxxx
> > To unsubscribe send an email to tcml-leave@xxxxxxxxxxxxxxx
> _______________________________________________
> Tesla mailing list -- tcml@xxxxxxxxxxxxxxx
> To unsubscribe send an email to tcml-leave@xxxxxxxxxxxxxxx
>
--
Joshua Thomas
My new email address is: joshuafthomas@xxxxxxxxx
Please update your information if you have not already done so.