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Re: UV Smooth Prime

Subject: Re: UV Smooth Prime
From: ami mcfadyean <ami@mcfadyean.freeserve.co.uk>
Date: Thu, 8 Nov 2001 21:25:42
Alcohol will attack the Expancel used in the filler. If it soaks in that
far; epoxy being less permeable than most things.

Duncan McFadyean
-----Original Message-----
From: Rowland & Wilma Carson <rowil@clara.net>
Date: Thursday, November 08, 2001 6:18 PM
Subject: Re: UV Smooth Prime


>
>>Any cleaner that
>>appears to soak into it will evaporate out.  I think the safest is
>>rubbing
>>alcohol
>
>I hope "rubbing alcohol" is not the same as what's called "surgical
>spirit" in UK. Surgical spirit contains oil of wintergreen, and so is
>NOT suitable for any solvent-cleaning task as it will leave a slight
>oily residue.
>
>>it has caused me no trouble
>
>Sounds as if it must be different stuff, then.
>
>>More problematic is dust, which causes fisheyes
>
>All the texts I've read assert that fisheyes are caused by
>silicon/silicone or oil contamination of workpiece or spraygun. I
>think fisheyes are the visible effects of local variations in the
>surface-tension of the wet paint layer. I guess dust, depending on
>its chemical composition, could do that, but I associate it more
>commonly with poor surface finish - slight roughness or grittiness
>after the paint is dry, and perhaps poor adhesion in tiny spots.
>
>regards
>
>Rowland
>
>
>| PFA 16532   EAA 168386   Young Eagles Flight Leader 017623
>| Europa builder #435 G-ROWI
>



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