Re: Polyurethane (fwd)

["Tesla list" <tesla-at-xxxxxxxxxx>]

Original poster: Tesla List Moderator <mod1-at-poodle.pupman-dot-com>



---------- Forwarded message ----------
Date: Thu, 06 May 1999 07:21:37 EST
From: quantumx-at-mail.ozemail-dot-com.au
Reply-To: Quantum-X-at-Qserve.8m-dot-com
To: Tesla list <tesla-at-pupman-dot-com>
Subject: Re: Polyurethane


Hey all.
Having just read these, I'm starting to get a little panicky- I went to the
hardware store and asked for polyurethane, and was given an appropriate
aeresol. Having read these posts, I had a look on the can - it doesn't say
ANYTHING about its contents, ingredients wise- what it does so though, is
"Do NOT use Estapol Satin [the stuuf I was given] with Estapol 7008 or visa
versa"... This seems to indicate to me that at least one of the afore
mentioned products is reactive. I'm just wondering - has anyone else used
this product before? Its full name is "WATTYL- Estapol Satin".
If I can't use it, I'm sure the TC base wouldn't mind a few layers of it :)

Also, whilst fossiking under the house, I found a TIN of polyurethane. This
looks much more hopeful than the spray on stuff that I have - is it alright
to paint polyureathane on?

Thanks for you help
Simon
10" thru winding a 24" secondary by hand ;)


On Tue, 5 Dec 2000, Tesla list wrote:
> Date: Tue, 5 Dec 2000 13:34:38 -0700
> To: tesla-at-poodle.pupman-dot-com
> From: "Tesla list" <tesla-at-pupman-dot-com>
> Subject: Re: Polyurethane (fwd)
> 
> Original poster: Tesla List Moderator <mod1-at-poodle.pupman-dot-com>
> 
> 
> 
> ---------- Forwarded message ----------
> Date: Tue, 5 Dec 2000 14:24:19 -0500
> From: Aric_C_Rothman-at-email.whirlpool-dot-com
> To: Tesla list <tesla-at-pupman-dot-com>
> Subject: Re: Polyurethane (fwd)
> 
>      Acrylic should not be vulnerable to oil-based coatings, provided the
> 
>      product you use does not contain volatile organic solvents to 
>      accelerate drying.  I used phenolic varnish, which is oil-based, to 
>      coat an acrylic secondary, with excellent results.  I did, without 
>      thinking, wipe down the same form with acetone, which did cause the 
>      form to craze, but the form, thus weakened, was not damaged further
> by 
>      the varnish.
>      
>      Do not use aerosol dielectric "varnishes" to encapsulate secondary 
>      windings on acrylic forms, as these products are more akin to 
>      lacquers, and are full of volatile solvents which will attack
> acrylic.
>      
>      BTW, I would encourage everyone to consider phenolic varnish to coat
> 
>      secondaries (at least to encapsulate the secondary windings). 
> Varnish 
>      goes on thicker than polyurethane, and I was able to apply three
> coats 
>      a day with the product I used.  Clean up is with cheap mineral 
>      spirits.
>      
>      Aric
>      
>