Re: ATM Softening pitch

[Anthony Stillman <atmer@flash.net>]

Arthur,

>...I hope someone will kindly answer:

Unless your last name is Shrub, you'll likely only get kind answers.


>...one kilo of Gugolz 74,


I guess it's cold in the valley.  I use turpentine and bees wax.  Used bees
wax last night.  Both work fine.  As you know it takes very little
turpentine.


>...perform an adequate Foucault test on a 5 micron

I keep trying, it's yet to work.  The bottom line, except for extreme
errors, lots of stig say, doing a foucault before a mirror is polished out
is pointless.


>...I am thinking of heating the pitch out in my back yard

I use a small electric hot plate mostly.  Sometimes I'll reheat the surface
with a blow torch.  If the pitch catches fire, I blow it out quickly.
Burned pitch doesn't leave a very good polish.  I tried some experiments
setting pitch on fire.  It put its self out pretty fast.  I think I'll have
to add a bunch of turpentine for the torch march on Casa del Blanco.


>Is there any easily acquired substance to which pitch will not adhere?

Yes, tape.  Epoxy won't stick to this either.


>...in motor oil

Motor oil, as do most oils, softens pitch into goo.  Also check the archive
for other channeling ideas.


>...is there any possibility of using ceramic as a mirror media?

If you mean Cervit, Astro-sil, Zerodur, ... then yes.  If you mean
porcelain, well only a telescope making fool would try that.  Check the
archive for my on others efforts


Anthony


particeps criminis
a partner in the crime