Lily Krakowski on sun 13 oct 02
Roger: What protective mask/respirator/ etc do you wear while pourin hot
lead?
Roger Graham writes:
> For Primalmommy, and any others who'd like to try it: Yes, spin casting on
> the wheel head works for me. Only using hot lead, mind you, not aluminium or
> brass.
>
> How this all began: I had an interest in sandblasted designs on pots. Throw
> a pot in white clay. Coat it with coloured slip, say iron oxide brown or
> cobalt blue. Let it dry completely. Clip on a suitable stencil, then gently
> sandblast the green unfired pot to remove the coloured slip around the
> stencil. Very pleasing... but a bit ho-hum with simple stencil shapes. Much
> more interesting if the stencils have a bit more detail.
>
> What to make the stencils out of ? Paper isn't a big success. Lifts off in
> the blast of air. Sheet lead is excellent. Cut it with scissors. Clip it on
> somehow. Being easily bent and malleable, lead holds its shape when pressed
> against the curved pot. Very detailed shapes needed lots of care with
> scissors, or assembly piece by piece with copper wire and solder. Which
> brings me to the centrifugal casting idea.
>
> In brief, the detailed design is carved into the flat surface of a plaster
> slab. Clamped face-down against a smooth bat on the wheel head, with a
> suitable hole at the centre where hot lead is to be poured in. Spin fast,
> pour in lead.
>
> There's a LOT more detail if anybody's interested. Needs pictures, so make
> contact off list if you feel adventurous. I'd enjoy putting together a
> picture essay and a page or two of description.
>
> Roger Graham, near Gerringong, Australia
>
> rogergraham@optusnet.com.au
>
> http://members.optusnet.com.au/~rogergraham
>
> ______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.
Lili Krakowski
P.O. Box #1
Constableville, N.Y.
(315) 942-5916/ 397-2389
Be of good courage....
Ababi on sun 13 oct 02
Leadless mask
---------- Original Message ----------
>Roger: What protective mask/respirator/ etc do you wear while pourin hot
>lead?
Philip Poburka on sun 13 oct 02
One method...is to have a mild ambient 'Breeze'...and the
smelting and such down-wind.
If no Breeze is ambient...a large Fan or two may be used on
a
gentle setting...test for eddies with incense or whatever as
makes visable smoke.
Adjust accordingly.
Phil
Las Vegas
----- Original Message -----
From: "Lily Krakowski"
To:
Sent: Sunday, October 13, 2002 7:51 AM
Subject: Re: did you say lead?
Roger: What protective mask/respirator/ etc do you wear
while pourin hot
lead?
Roger Graham writes:
> For Primalmommy, and any others who'd like to try it: Yes,
spin casting on
> the wheel head works for me. Only using hot lead, mind
you, not aluminium or
> brass.
>
> How this all began: I had an interest in sandblasted
designs on pots. Throw
> a pot in white clay. Coat it with coloured slip, say iron
oxide brown or
> cobalt blue. Let it dry completely. Clip on a suitable
stencil, then gently
> sandblast the green unfired pot to remove the coloured
slip around the
> stencil. Very pleasing... but a bit ho-hum with simple
stencil shapes. Much
> more interesting if the stencils have a bit more detail.
>
> What to make the stencils out of ? Paper isn't a big
success. Lifts off in
> the blast of air. Sheet lead is excellent. Cut it with
scissors. Clip it on
> somehow. Being easily bent and malleable, lead holds its
shape when pressed
> against the curved pot. Very detailed shapes needed lots
of care with
> scissors, or assembly piece by piece with copper wire and
solder. Which
> brings me to the centrifugal casting idea.
>
> In brief, the detailed design is carved into the flat
surface of a plaster
> slab. Clamped face-down against a smooth bat on the wheel
head, with a
> suitable hole at the centre where hot lead is to be poured
in. Spin fast,
> pour in lead.
>
> There's a LOT more detail if anybody's interested. Needs
pictures, so make
> contact off list if you feel adventurous. I'd enjoy
putting together a
> picture essay and a page or two of description.
>
> Roger Graham, near Gerringong, Australia
>
> rogergraham@optusnet.com.au
>
> http://members.optusnet.com.au/~rogergraham
>
>
____________________________________________________________
__________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your
subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached
at melpots@pclink.com.
Lili Krakowski
P.O. Box #1
Constableville, N.Y.
(315) 942-5916/ 397-2389
Be of good courage....
____________________________________________________________
__________________
Send postings to clayart@lsv.ceramics.org
You may look at the archives for the list or change your
subscription
settings from http://www.ceramics.org/clayart/
Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
Roger Graham on mon 14 oct 02
For Lili, asking about mask or respirator while pouring hot lead. Honest
answer to this question, no mask, no respirator. Done with no real attempt
at forced ventilation. Just a small quantity of sheet lead clippings in a
tin can, heated a little above melting point in a tin can. The whole event
takes no more than a minute or two.
No disrespect intended to the occupational health and safety people. Just
that it seems a minimal risk, for the very infrequent short exposure
involved. Not to be compared with sniffing somebody else's cigarette smoke.
Roger Graham, near Gerringong, Australia
http://members.optusnet.com.au/~rogergraham
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