[Prev][Next][Index][Thread]
Re: Esthetically Pleasing Primaries
In a message dated 97-02-11 01:44:04 EST, you write:
<<
How do you guys keep your primaries looking so nice. All the pictures I
have seen of primary's from copper tubing they are nice and flat and evenly
spaced out. I tried running mine through hose for insulation, but this did
not work well. (Boy is it tough to pull 40 feet of 1\4" copper through a
5\16 I.D. tube !!!) What about the spiral type primaries? They all look so
esthetically pleasing.
******** Tim Maleske ***********************************
>>
Tim,
I built my large 14 turn primary with 3/8" copper tubing wound with 3/8"
spacing between windings. I made an elevated shelf about 4 feet above the
table I was working on and placed the coil of tubing on the shelf with a one
gallon paint can in the center to keep it from falling off. Then I brought
one end of the tubing down to the primary coil form and slipped on a 3/8"
tubing bending tool - looks like a long spring. Now, I formed the tubing to
fit the acrylic form and spot tied each intersection with the plastic form as
I went around with waxed lacing cord. I used a 3/8" drill bit to continually
check the spacing.
My back got sore, it took about 5 hours, but it looks like a million bucks.
Ed Sonderman