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No problem Ray. Thanks for taking the time to tell
me what you did know.
Bill Akins.
----- Original Message -----
Sent: Tuesday, April 18, 2006 3:24
PM
Subject: Re: [PSUBS-MAILIST] Water nozzle
propulsion
Hi Bill,
Sorry, I can't be much more help. I did the
lost wax
process back in 7th grade. For the real details you
are going
to have to contact a local jewler or visit
a
library.
Regards,
Ray
--- Akins <lakins1@tampabay.rr.com>
wrote:
> Thanks Ray, I didn't previously know that. I was
>
just remembering the lost wax process from an old
> National Geographic
article
> I read probably 30 years ago about indians in
> Arizona
making silver jewelery using the lost wax
> process. Strange how some
things
> stick in your mind for many years yet I can never
>
remember which day the garbage man comes! Grin.
>
> Your
explaination leaves me with several questions.
> If the kiln is sealed
and the wax vaporizes out of
> the mold located inside the kiln, when
the kiln
> is cooled and you open it to retreive your mold,
>
where did the wax go, is it now cooled and reformed,
> coating all over
the inside of the kiln, as well as
> all
> over the outside of
your now cooled mold, or does
> the wax somehow become totally destroyed
due to the
> heat and is not able to reform
> later when the kiln
cools down? If this is true,
> does it become carbonized and appear as
ash inside
> the kiln? I know matter cannot be destroyed (except
>
by antimatter) but only
> changed into other forms, so if the wax is
totally
> gone from the kiln and the kiln is totally sealed,
>
what does the wax become? Or does the kiln have a
> vent to allow gas to
> escape and the wax escapes as a gas? It's been a
> very long
time since I last saw or used a kiln. High
> school actually, and I
don't remember if they were
> vented or not.
> Also, do you make
holes in the bottom of your mold
> so the wax can run out or does it
make no difference
> whether
> the drain/vent holes are at the top
of the mold or
> the bottom and the wax would vaporize out
either
> direction?
>
> I'm interested in this because I
have need to cast
> some small parts for one off prototypes for
my
> firearm accessory business.
> I have previously been making
them by hand out of
> solid bar steel. That takes too much time and
effort
> compared to casting.
>
> As always, thanks for
the helpful info.
>
> Bill Akins.
>
>
>
> ----- Original Message -----
> From:
Ray Keefer
> To: personal_submersibles@psubs.org
> Sent: Tuesday, April 11, 2006 2:38 PM
>
Subject: Re: [PSUBS-MAILIST] Water nozzle
> propulsion
>
>
> Hi Bill,
>
> There is another
step on the lost wax process.
> Once
> the mold had
hardened around the wax. The mold is
> put
> into a
kiln. At high heat the wax vaporizes out of
> the
>
mold.
>
> This leaves the cavities empty for the
moltant
> metal
> to fill. Otherwise the wax may not
completely
> displaced by the moltant metal leaving an
ill
> formed
> duplicat.
>
>
Regards,
> Ray
>
>
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