----- Original Message ----- From: "Andrew Rich" vk4tec@people.net.au To: "Amsat-Bb@Amsat. Org" amsat-bb@amsat.org Cc: "Aprssig" aprssig@lists.tapr.org Sent: Friday, December 07, 2007 11:22 PM Subject: [amsat-bb] Forming wire loops
I am looking for ideas to help form wire loops from wire that is already of larger diamater.
I was thinking of making up a base board with some pulley wheels and feed the wire in.
As it goes over the pulleys, a gentle pressure is applied and helps bend the wire into a smaller coil.
I tried a bucket and failed misserably.
Ideas ?
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Andrew Rich VK4TEC vk4tec@people.net.au http://www.tech-software.net
Hi Andrew, VK4TEC
Your machine was normally used by amateur to form aluminum angulars to get parabolic ribbons to be used in large parabolic EME dishes for 70 cm and 23 cm.
The pressure applied over the central pulley depends on the material of the wire to be formed.
Annealed aluminum or copper wires versus cold drawn aluminum or copper wires requires completely different pressure applied over the central pulley to get the material permanently stressed.
If your effort failed probaly your wire was cold drawn wire and not annealed wire
Best 73" de
i8CVS Domenico