The Turn Of The Century Electrotherapy Museum
(C) Jeff Behary 2011 

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The Tesla Machinist:  Making A Tesla Secondary Coil
A machinist's approach to winding a Tesla Coil...

56 turns per inch!

For comparisson, here is a 10-32 x 1/2" long machine screw!

Part 1:  Turning a PVC pipe true to begin the threading process: 

Part 2:  Cutting Threads in the PVC pipe

Part 3:  Inlaying the wire in the grooved pipe

Part 4:  The Finished Coil

4.5" x 22.5" x 48 TPI = 1080 turns

3.5" x 19" x 56 TPI = 1064 turns

Test photo

(C) Jeff Behary, 2011