[TheForge] something I hope better than what was the theft of metal public

Wed Apr 22 11:46:37 EDT 2015

Didn’t they usta make window glass by floating it on a pool of molten tin?

On Apr 22, 2015, at 8:15 AM, Bruce . <freemab222 at gmail.com> wrote:

Jerry,

I just got another totally untested and hypothetical idea:

Suppose you put a steel "cup" underneath that opening you want to fill with
glass, and partly fill the cup to the cross using lead.    NOW melt the
glass in atop the lead.  The idea here is that the steel cup retains the
liquids, but the lead stays at the bottom.  The glass can't leak through
the liquid lead because it's much less dense.  Obviously, the liquid lead
level must be correct.

Don't breath lead vapors, especially the oxidized fumes.  Good ventilation
is in order.

Bruce
NJ

On Wed, Apr 22, 2015 at 12:49 AM, Saint Phlip <saintphlip at gmail.com> wrote:

> Frostig, post your questions to Carolyn on EK Metalsmiths list. She's a
> jeweler and lampworker- she may be able to help.
> 
> On Tue, Apr 21, 2015 at 3:47 PM, jerry Frost <akfrosty at mtaonline.net>
> wrote:
> 
>> Yes Bruce I'm melting it not slumping. While it doesn't flow quite like
>> water it's amazingly fluid. Copper won't work as a dam unless I want to
>> fuse it to the copper but that has a whole different set of issues,
> mainly
>> COE. Steel and most alloys of glass have very close COEs. And yes, I've
>> been giving it hours of temper time.
>> 
>> Polished stainless steel is the norm for shaping and handling molten
> glass
>> and my first clamp is a flattened spoon with the handle bent around for a
>> clamp. Unfortunately being so much thinner and larger surface area than
> the
>> crosses it heats faster and hotter so the glass sweats out between the
> two
>> like solder. I had limited success with soap stone welder's "chalk" but
>> being a form of asbestos it's a great insulator making for an uneven
> melt.
>> The glass didn't actually bond to the soap stone though so it's still a
>> possible backer. One of my most successful attempts was carving a piece
> of
>> soap stone to fit in the negative space. Unfortunately the glass only
> fused
>> rather than melting.
>> 
>> I should mention what kinds of glass I'm using eh? Having poor results
>> trying to melt marbles for a number of reasons I decided to try lamp
> glass.
>> I found close, it seems there are so few lamp workers up here they all
>> order from outside and no art glass studios carry rod. I bought red
>> noodles, long flat strips. They're used for art glass like Chilhuly
>> studios, not really lamp work glass but closer than marbles for sure.
> It's
>> colors withstand heat much better than marble's colors.
>> 
>> The noodle melted nicely but made for an uneven fill. The negative space
>> in a "Fredrich's" or "spread" is star shaped with points that diminish to
>> very small spaces. My next move was to buy red frit. Frit conforms to the
>> negative space nicely but holy macarel it really reduces in volume when
> the
>> pile degasses. I was warned by the fellow at the art glass studio it
> would
>> really reduce in volume so I piled it nearly to its angle of repose. The
>> finished piece is about 1/3 full.
>> 
>> The backing I've had the best luck with so far is the kiln paper, ceramic
>> paper similar to Kaowool. I got a good seal by putting a LITTLE bit of
>> Kaowool under the negative space so the paper would conform to the cross
>> more closely. Being spread crosses the bends and twists used to open them
>> leaves surface texture and flattening them reduces their charm.
>> 
>> There are kiln washes and investment casing media molten glass won't
> stick
>> to. The downside to both besides cost is neither would survive my forge
> if
>> I actually wanted to do some forging and I'm not going to buy a glass
> kiln.
>> 
>> Thanks for the questions and suggestions Bruce.
>> 
>> I'm so new to messing with molten glass I have to develop a vocabulary to
>> even ask a good question. This ALMOST makes me wish I lived close enough
> to
>> Anchorage to take a few art glass classes. Talking to Drew at the glass
>> studio was very enjoyable. Glass work and metal work appear to share a
> lot
>> of vocabulary and processes if by different usage and terminology.
>> 
>> Jer
>> 
>> 
> 
> 
> 
> --
> Saint Phlip
> 
> Only President Obama could double the stock market, cut the deficit by
> 2/3, bring
> gas down under $3, get bin Laden, end 2 wars, bring unemployment down under
> 6%,  while fighting a government that is trying to destroy him, and still
> be told he's failing as President.
> 
> 
> Heat it up
> Hit it hard
> Repent as necessary.
> 
> Priorities:
> 
> It's the smith who makes the tools, not the tools which make the smith.
> 
> .I never wanted to see anybody die, but there are a few obituary notices I
> have read with pleasure. -Clarence Darrow
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