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Re: [TCML] Secondary form material



PVC is fine and most people use it. Find a size that you can get simple plumbing end conductors eg a screw on one for the base.
Dry the PVC with heat and coat inside and out.
No advantage to acrylic IMHO.
My 6 inch PVC coil has produced sparks 3 times the length of the secondary winding and is still in daily museum use after 5 years at lower power. If you can beat that then good on you.
Peter www.tesladownunder.com


----- Original Message ----- From: "Andrew Robinson" <teslamad@xxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Saturday, June 27, 2009 2:57 AM
Subject: [TCML] Secondary form material


As many have already discovered, PVC is apparently a terrible material to use as a secondary coil form. About a week ago my engineering group also discovered that acrylic is extremely hard to work with. We ended up cracking our only secondary coil form which we slaved over to find! So my question to everyone out there is what on earth should we use for the secondary coil form. We need a 4" OD coil form and if possible, if you can name a material that can also be an 1/8" thick we have a nice cutting tool that makes the most perfect end caps. So ideally 4" OD and 3.75" ID is perfect for what we need. I've called numerous plumbing companies with no help what so ever. Thanks everyone!

Regards,
Andrew Robinson
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