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Hi Benjamin.
What you do is rewind your supply of wire onto a long bobbin which will pass
through the centre of the former comfortably. It looks a bit like the shuttle
used on a weaving loom. There is a picture of one somewhere - Jim Koehler's
site I think.
Cris.
-----Original Message-----
From: Benjamin R. Ginter [mailto:[email protected]]
Sent: Sunday, June 25, 2000 3:03 AM
To: [email protected]
Subject: Fisher-Price Rock-A-Stack, helical-toroid coil, etc..
The Proton Mag Forum
Hello,
Well, it's been a while since I last posted to the list. I got a little
sidetracked with coilguns and have been reading all sorts of interesting
information.
I bought 1000ft of 28awg magnet wire from Mouser electronics for about
$12. I've been winding different types of coils, trying to get the hang
of winding without crossovers and whatnot.
I'm a little stuck on how one can wind a toroidal coil from a spool of
wire without passing the entire spool of wire through the center of the
torus. I've seen approaches where a notch is cut in one side of the torus
to pass the wire through but the author of that post suggested that it
might be somewhat directional because of that.
I bought the Fisher-Price Rock-A-Stack toy at Wal-Mart for $3.94 (and
there were at least a dozen more on the shelf). Winding a coil over this
form seems pretty daunting. Am I missing something? Do the people who
are using this toy as a form have some type of ingenious winding jig?
I'm also interested in which torus others are using out of the toy.
I've looked through the list archives and it isn't very clear.
One approach I've been considering is to take 1/4" fish tank tubing and
wind a single layer of turns around a length and then wrap the completed
coil in a helical fashion around the torus. I'm unsure what the resulting
field would look like or if there are any serious drawbacks or benefits
(other than ease of construction) of this design.
Anyway, I've taken some pictures of the coils and rock-a-stack to give you
a better idea of what I'm talking about. Check them out at
http://prospecting.kingman.az.us/protonmag.html and let me know what you
think of this approach.
Best Regards,
Ben
__________________________________________________ ____________________
What you do is rewind your supply of wire onto a long bobbin which will pass
through the centre of the former comfortably. It looks a bit like the shuttle
used on a weaving loom. There is a picture of one somewhere - Jim Koehler's
site I think.
Cris.
-----Original Message-----
From: Benjamin R. Ginter [mailto:[email protected]]
Sent: Sunday, June 25, 2000 3:03 AM
To: [email protected]
Subject: Fisher-Price Rock-A-Stack, helical-toroid coil, etc..
The Proton Mag Forum
Hello,
Well, it's been a while since I last posted to the list. I got a little
sidetracked with coilguns and have been reading all sorts of interesting
information.
I bought 1000ft of 28awg magnet wire from Mouser electronics for about
$12. I've been winding different types of coils, trying to get the hang
of winding without crossovers and whatnot.
I'm a little stuck on how one can wind a toroidal coil from a spool of
wire without passing the entire spool of wire through the center of the
torus. I've seen approaches where a notch is cut in one side of the torus
to pass the wire through but the author of that post suggested that it
might be somewhat directional because of that.
I bought the Fisher-Price Rock-A-Stack toy at Wal-Mart for $3.94 (and
there were at least a dozen more on the shelf). Winding a coil over this
form seems pretty daunting. Am I missing something? Do the people who
are using this toy as a form have some type of ingenious winding jig?
I'm also interested in which torus others are using out of the toy.
I've looked through the list archives and it isn't very clear.
One approach I've been considering is to take 1/4" fish tank tubing and
wind a single layer of turns around a length and then wrap the completed
coil in a helical fashion around the torus. I'm unsure what the resulting
field would look like or if there are any serious drawbacks or benefits
(other than ease of construction) of this design.
Anyway, I've taken some pictures of the coils and rock-a-stack to give you
a better idea of what I'm talking about. Check them out at
http://prospecting.kingman.az.us/protonmag.html and let me know what you
think of this approach.
Best Regards,
Ben
__________________________________________________ ____________________