Re: [ATM] Baffles

[Dominic-Luc Webb <dlwebb@canit.se>]

On Mon, 19 Jun 2006 johncdeitz@comcast.net wrote:

> How are you measureing effectiveness of the blackness?
> John


Apparent reflectivity in visual light at low angle.

Dominic

>  -------------- Original message ----------------------
> From: Dominic-Luc Webb <dlwebb@canit.se>
> >
> > On Fri, 16 Jun 2006, Andy Saulietis wrote:
> >
> > > For my own scopes, I use Krylon 1602 Ultra Flat Black spray paint.
> > > Works great if
> > > applied just thick enough to cover the surface. Additional coats
> > > actually increase the
> > > reflectivity.
> >
> > This is my experience as well. I wonder, have you ever used velvet
> > or velcro, etc? I tried artificial lawn, painted with this paint.
> > Really worked! I suspect it was due partly to lots of surface area.
> > Of course, the plastic dries up and becomes brittle, which contributes
> > huge amounts of dust and particles that have to be cleaned, but I
> > was pleased with the baffling performance. I have also tried mixing
> > particles into black paint to keep the surface rough.
> >
> > The blackest, most non-reflectice material I have worked with is coal
> > rubbed onto a rough cardboard surface. It is a real mess to work with,
> > so I do not think this will ever be popular.
> >
> > Dominic
> >
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>
>
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