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Re: Primary pipe size/spacing questions?

Original poster: "Dr. Resonance" <resonance@xxxxxxxxxx>

Ball nose cutter on a milling machine.

The tubing size won't make a lot of difference at this power level.  1/4
inch is ok.

Dr. Resonance

> > Ok, I am in the process of building/designing another > coil. Currently, I have around 1300 watts of power > available, a 6.312" x 28.375" secondary with 24 ga > wire. I am currently on the design phase for the > primary, and have a few questions. First, I see that > most people are using 1/4" copper pipe. The problem > is, for me to get 60' of pipe its gonna cost me... I > did find some 3/8" pipe in a 60' roll for $20(us). > Here's my question, I would assume, that the larger > the pipe you use the more 'driving' power it takes to > create a magnetic field? The same thing goes for the > spacing, I see that the further I space the windings, > I get more inductance per turn. Thus again, I would > assume more 'driving' power to get the same magnetic > field. > > So, for my application, (around 1300 watts, 3 NST's > paralleled) is 3/8" pipe a bit to large? > > Also, as for cutting 'slots' in acrylic to make the > standoffs for the primary, how did you guys cut them, > just with a table saw and fence? > > Thanks in advance, > ~Blimpie > >