http://www.electrotherapymuseum.com/2009/TungstenContacts/index.htm (http://www.electrotherapymuseum.com/2009/TungstenContacts/index.htm)

We're trying to revive the lost art of making Tungsten Contacts for Spark Gaps here  :D...

(http://www.electrotherapymuseum.com/2009/TungstenContacts/DSC08099.JPG)

These are also useful for switches, induction coil interrupters, relays, and other kindred apparatus.
Along with these contacts we are also putting together self-cooled spark gaps in the style of the
early medical Tesla Coils.  They are designed for extended use and for long run-times.

(http://www.electrotherapymuseum.com/2009/FinnedSparkGaps/DSC08297.JPG)
(http://www.electrotherapymuseum.com/2009/FinnedSparkGaps/DSC08291.JPG)

These are all custom made on a personal basis depending on what you're looking for.

(http://www.electrotherapymuseum.com/2009/FinnedSparkGaps/DSC08293.JPG)

Here is a simple "coffee table" coil (only 250 turns of wire) run from a 9kV 60mA neon, .006 mfd condenser, and the 3
series Spark Gap seen above.  It produces a 12" discharge.  This form of stationary gap can be used for all styles and sizes of neon transformer powered coils (it can easily handle even 120mA) and small potential transformer coils of a few KW. 

Let me know if anyone needs anything!   :)

Jeff Behary
Turn Of The Century Electrotherapy Museum