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From: "Peter Clifton (petercjclifton AT googlemail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Date: Thu, 16 Feb 2017 16:14:18 +0000
Message-ID: <CAJXU7q-7_CL9FhxOKPs0YvcfmG85K2OEv2zkCt6O9Hh9erChvQ@mail.gmail.com>
Subject: Re: [geda-user] [Offtopic] Application of silicone based conformal coatings?
To: gEDA User Mailing List <geda-user AT delorie DOT com>
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Cool.

When you say "dry", do you mean it has to be run through a dessicant pack?
Refrigeration dehumidifier? Simple swirl water trap?

Wondering if I'll get by with air direct from the hydrovane compressor (or
the very noisy - deafening oilless SIP unit I have.

Peter

On 16 Feb 2017 16:05, "Marvin Dickens (mpdickens AT gmail DOT com) [via
geda-user AT delorie DOT com]" <geda-user AT delorie DOT com> wrote:

> A cheap airbrush with adjustable nozzle works in a tight - They key is
> dry air and stable air flow.
> This is how we do it with our prototypes...
>
>
> Regards
>
> Marvin
>
> On Thu, Feb 16, 2017 at 4:38 AM, Peter Clifton
> (petercjclifton AT googlemail DOT com) [via geda-user AT delorie DOT com]
> <geda-user AT delorie DOT com> wrote:
> >  Hi all,
> >
> > I bought some Dow Corning silicone based conformal coating from a
> supplier I
> > use for solder paste syringe tips etc...  this was repackaged into 50ml
> > syringes by them.
> >
> > Turns out I've no idea how to apply it. I have an air dispensing setup
> > (Fisnar), but the material is more viscous than I anticipated and does
> not
> > flow as much as I'd hoped when simply dispensed by syringe onto the
> board.
> >
> > Brushing leaves ugly brush strokes.
> >
> > I think I may need some kind of spray setup. Does any one know how this
> is
> > done "properly", or have any experience DIYing such a setup?
> >
> > The place I bought the coating also sell spay dispensing valves
> (moderately
> > expensive), controllers for them and xyz dispensing gantry robots (spen=
dy
> > items).
> >
> > Possibly looking to rig something simple up to approximate =C2=A3expens=
ive
> setup.
> >
> > Any thoughts?
> >
> > Kind regards,
> >
> > Peter Clifton
>
>

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<div dir=3D"auto">Cool.<div dir=3D"auto"><br></div><div dir=3D"auto">When y=
ou say &quot;dry&quot;, do you mean it has to be run through a dessicant pa=
ck? Refrigeration dehumidifier? Simple swirl water trap?</div><div dir=3D"a=
uto"><br></div><div dir=3D"auto">Wondering if I&#39;ll get by with air dire=
ct from the hydrovane compressor (or the very noisy - deafening oilless SIP=
 unit I have.</div><div dir=3D"auto"><br></div><div dir=3D"auto">Peter</div=
></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On 16 Feb =
2017 16:05, &quot;Marvin Dickens (<a href=3D"mailto:mpdickens AT gmail DOT com">mp=
dickens AT gmail DOT com</a>) [via <a href=3D"mailto:geda-user AT delorie DOT com">geda-u=
ser AT delorie DOT com</a>]&quot; &lt;<a href=3D"mailto:geda-user AT delorie DOT com">ged=
a-user AT delorie DOT com</a>&gt; wrote:<br type=3D"attribution"><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex">A cheap airbrush with adjustable nozzle works in a tight - Th=
ey key is<br>
dry air and stable air flow.<br>
This is how we do it with our prototypes...<br>
<br>
<br>
Regards<br>
<br>
Marvin<br>
<br>
On Thu, Feb 16, 2017 at 4:38 AM, Peter Clifton<br>
(<a href=3D"mailto:petercjclifton AT googlemail DOT com">petercjclifton AT googlemail=
.com</a><wbr>) [via <a href=3D"mailto:geda-user AT delorie DOT com">geda-user AT delo=
rie.com</a>]<br>
&lt;<a href=3D"mailto:geda-user AT delorie DOT com">geda-user AT delorie DOT com</a>&gt; =
wrote:<br>
&gt;=C2=A0 Hi all,<br>
&gt;<br>
&gt; I bought some Dow Corning silicone based conformal coating from a supp=
lier I<br>
&gt; use for solder paste syringe tips etc...=C2=A0 this was repackaged int=
o 50ml<br>
&gt; syringes by them.<br>
&gt;<br>
&gt; Turns out I&#39;ve no idea how to apply it. I have an air dispensing s=
etup<br>
&gt; (Fisnar), but the material is more viscous than I anticipated and does=
 not<br>
&gt; flow as much as I&#39;d hoped when simply dispensed by syringe onto th=
e board.<br>
&gt;<br>
&gt; Brushing leaves ugly brush strokes.<br>
&gt;<br>
&gt; I think I may need some kind of spray setup. Does any one know how thi=
s is<br>
&gt; done &quot;properly&quot;, or have any experience DIYing such a setup?=
<br>
&gt;<br>
&gt; The place I bought the coating also sell spay dispensing valves (moder=
ately<br>
&gt; expensive), controllers for them and xyz dispensing gantry robots (spe=
ndy<br>
&gt; items).<br>
&gt;<br>
&gt; Possibly looking to rig something simple up to approximate =C2=A3expen=
sive setup.<br>
&gt;<br>
&gt; Any thoughts?<br>
&gt;<br>
&gt; Kind regards,<br>
&gt;<br>
&gt; Peter Clifton<br>
<br>
</blockquote></div></div>

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