Re: [TCML] RF Grounding

["huil888" <huil888@xxxxxxxxxxxx>]

Daniel -

Actually, RTV silicone sealants don't release any "solvents" during curing, 
but most of the more common "household" grades of silicone caulking componds 
and sealants do release acetic acid vapors as a by-product of curing. This 
is why they have a distinct acetic acid smell, like vinegar, once they start 
curing. It is possible that the acetic acid residue is what caused Richard 
Q's problem long ago, although I don't recall if his problem was arcing 
inside the secondary coilform.

There are special RTV silicone sealants that do not release acetic acid. 
Electronic-grade silicone sealants like General Electric RTV-162 release 
alcohol during curing, which evaporates without leaving any conductive 
residue. There are also special automotive silicone sealants that are 
labeled as "safe for catalytic converters"; they also do not release acetic 
acid.

I seem to recall that someone else (long ago) had a secondary that actually 
caught on fire because of internal arcing that ignited trapped solvent 
vapors from the PVC solvent-type glue that he used to attach end caps or to 
seal internal baffles.

I've always just used the electronic-grade RTV sealents to secure internal 
baffles, and never had any problems with internal arcing, trapped solvent 
vapors igniting, etc.

Regards,
Scott Hanson


----- Original Message ----- 
From: "Daniel Hess" <dhess1@xxxxxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Cc: <tesla-bounces@xxxxxxxxxx>; "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Saturday, March 08, 2008 10:17 AM
Subject: Re: [TCML] RF Grounding


> Richard;
>
> So what have you found to attach baffles and end caps with that doesn't
> involve those nasty solvent vapors?
>
> Thanks,
>
> Daniel Hess
>
>
>
> Richard Quick <rtqii@xxxxxxxxxxx>
> Sent by: tesla-bounces@xxxxxxxxxx
> 03/07/2008 11:28 PM
> Please respond to
> Tesla Coil Mailing List <tesla@xxxxxxxxxx>
>
>
> To
> Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> cc
>
> Subject
> Re: [TCML] RF Grounding
>
>
>
>
>
>
>
> People were literally building bombs in some cases... That I wanted to
> clear up just to prevent injuries which would make everyone look bad.
> Others were using silicone sealants for baffles and end caps... I used to
> myself, until I traced a failure back to the solvent vapors.
>
> Thanks for everything :)
>
> Richard
>
>
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