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Re: Rotary Gap
From: FutureT-at-aol-dot-com[SMTP:FutureT-at-aol-dot-com]
Sent: Saturday, August 09, 1997 2:16 AM
To: tesla-at-pupman-dot-com
Subject: Re: Rotary Gap
In a message dated 97-08-08 13:15:59 EDT, you write:
<<
> John Freau
> I used "contact cement" both for the cutoff-wheel to plywood joint, and
> for the plywood to pulley joint. This glue is applied to each surface,
> and allowed to dry until it is tacky. Then, when the surfaces are
> brought together, they bond instantly (so alignment must be correct -
> you don't get a second chance). In my case, I used a temporary dummy
> shaft through all the components for alignment.
> Also, you obviously should use a fairly large pulley to have good
> support for the plywood, and it should have a large flat surface facing
> the wood. There are some solid steel pulleys with flat sides available
> in "small engine repair" shops, or if you have an alloy pulley with
> enough "meat", you can cut one side down on a lathe to get a good flat
> surface.
> Steve Falco
> sfalco-at-worldnet.att-dot-net
>>
Steve,
Thanks for this rotary gap construction information. I have noticed
that there seems to be two different types of contact cement
available (but one may be an older type), One type is flammable,
and has a certain texture...another type is i think not flammable,
and has a different texture. Are both these types equally strong
and suitable for this application?
Thanks again,
John Freau