arbors

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <teslalist-at-qwest-dot-net>" <Tesla729-at-cs-dot-com>

Hi all,

I was thinking about redoing my RSG (maybe make it synchronous
and upgrade to G-10 and tungsten), anyway I was wondering if a ty-
pical arbor for attaching an emery wheel to the shaft of a motor would
suffice as a fastening mechanism for attachment of the RSG disc to
the shaft of the motor? I've used similar euipment before to accomplish
this although I have had a bit of trouble with wobble of the disc perpen-
dicular to the shaft. Is this going to be an ongoing problem with the ar-
bor type of shaft attachment? I've noticed that many RSGs have a hub
the has like 4 screws or bolts through the hub. Is this type of hub at-
tachment required to suppress the annoying disc wobble and if so can
they be purchased locally or do I have to order them from McMaster-
Carr or a similar outfit?

Also, I have a decent sized piece of 1/2" G-10 and have already drilled holes
for the shaft and the rotory electrodes. My problem is that I need to
cut the disc out and I don't have any decent machining facilities (only
basic tools) so I'm figuring on having to take it a local plastics fabricator
and have them cut it out and drill and tap some holes in the outer peri-
phery of the disc lined up with the electrode holes so I can use set-screws
to secure the tungsten flying electrodes. I'm sure this sounds quite ele-
mentary to many of you but I have only used threaded rods or bolts and
nuts to hold them in place as flying electrodes in the past, so using
smooth tungsten rods as flying (and stationary) electrodes is new terri-
tory to me :^)

Thank you,
David Rieben