[Test-Equipment] Make your own coil dope (Was Re: HP-606A Calibration question)

[Sandy]

White styrofoam plastic (unused coffee cups work fine!)  The solvent is 
Toulene available at most good paint stores.

A quart can lasts forever!

73,

Sandy W5TVW
----- Original Message ----- 
From: "Tom NØJMY" <n0jmy at hayseedhamfest.com>
To: "Discussion of Electronic Test Equipment" 
<test-equipment at mailman.qth.net>
Sent: Tuesday, May 26, 2009 2:17 PM
Subject: Re: [Test-Equipment] Make your own coil dope (Was Re: HP-606A 
Calibration question)


I've always heard of people dissolving white "styrofoam" coffee cups in
MEK (or maybe it was xylene).  Are those cups polystyrene?

73,
Tom NØJMY .   .

Multi-section Can Capacitors
for vintage Heathkit, Drake, Halli, Hammy, more...
www.hayseedhamfest.com

Steve Byan wrote:
> On May 26, 2009, at 11:14 AM, Richard Knoppow wrote:
>
>>     I used to know how to make coil dope, its something
>> like polystrene dissolved in xylene but I am not sure.
>
> Clear (unpigmented) polystyrene dissolved in methyl ethel ketone
> (MEK). MEK should be available at your local hardware store; you may
> be able to find clear polystyrene sheets packaged by Evergreen Scale
> Models at you local hobby shop.
>
> Best regards,
> -Steve
>
> --
> Steve Byan
> stevebyan at comcast.net
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