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

Wed Apr 22 13:06:32 EDT 2015

Great idea, but why not use tin. It's what they float glass on to 
manufacture it... It's where the term 'float glass' originates.

paul

On 04/22/2015 10:15 AM, Bruce . 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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paul
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