stadelman glass: equipment

STEVE STADELMAN GLASSWORKS IS UL-CERTIFIED FOR INDUSTRIAL
CONTROL PANELS IN THE UNITED STATES AND CANADA.

For details, contact us or consult Underwriters Laboratories Inc. standard 508A.

MOLY TECHNOLOGY: MYTH VS. REALITY

In the commercial literature about Molybdenum Disilicide heaters there is a lot of information that seems scary and if
taken out of context could be quite worrisome to anyone shopping for electric furnaces.

Myth: Moly is difficult to control.

It used to be, before the advent of affordable S.C.R. power controls moly was extremely difficult to control because
of the resistance change from room to operating temperature, now we set the control and walk away.

Myth: Moly has to be run to operating temperature practically instantly or it will degrade.

Not really, if moly stays at low temperature for an extended period of time when it is brand new (days at 1200f or so)
it will corrode but we routinely run our heaters to operating temperature in 60 hours with no ill effect. Once they have
been run for a day or two at operating temperature the furnace can be idled down at 12-1300F indefinitely.

Myth: Moly will sag and droop and eventually elongate.

The temperatures at which we run glass furnaces during a batch cycle (2350F) are only about 70% of their top oper-
ating temperature (3200f). At extreme operating temps molys DO get soft and droop a little, but at the temperatures
we run they are just loafing and tend to deform just a little over a period of years, if at all.

Moly will tolerate any batch or cullet product available just so long as it does not contain fluorine, popping cullet will
stick and just run off of the heaters as will batch dust or even clumps.

Our equipment is constructed with the finest available freestanding crucibles so that you will have the shortest down-
time possible when potchanges are needed (8 hours from start to finisg on a 600lb furnace with two people and a
chainfall hoist) and since we change pots through the roof the integrity of the furnace body is left intact to allow for
the maximum lifespan of the unit.

Myth: Moly heaters are extremely expensive to replace.

We have a high quality supplier that makes a reasonablely priced heater, and most of our customers have never
even used the spares supplied with the equipment.

This heater technology makes for a long-lasting furnace that is a real workhorse for the serious artist who is depending
on these machines for their livelyhood — or the hobbyist. All of our models will cook a pot of glass overnight and be
ready to run the next morning.

SOME FACTS ABOUT FAIRNESS IN PRICING

The prices you see here are complete. There is no fine print when it comes to what you'll spend when you decide
to purchase a Stadelman furnace. The cost of the furnace includes all electronics and controls, a two-stage safety
system designed around two independent thermocouples, an Engineered Ceramics crucible, furnace installation
and setup, and training. Put simply, no component is left out of the equation.

If you require the use of specialized voltage and/or three-phase power, you may incur additional costs. Consult
the furnace specifications below for more details. The cost of freight (F.O.B. Portland, OR) is not included in the
price of the furnace. The cost of airfare is not included in the price of the furnace. In most cases, Steve will
need to fly to your studio to install and set up the furnace. If you buy a 600-lb unit, a member of Steve's build
team will accompany him to your site for installation and setup.

75-LB. FREESTANDING POT FURNACE — TOP LOADING

Comes with your choice of crucible (capacity up to 75 pounds). Purchase includes two spare
Molybdenum Disilicide heating elements. This is a single-phase system, 30-amp draw on a 40-
amp breaker at 240v.

PRICE: $8,750 single-phase power

100-LB. (10-kW) FREESTANDING POT FURNACE — TOP LOADING

Comes with your choice of crucible (capacity up to 100 pounds). Purchase includes two spare
Molybdenum Disilicide heating elements.

At least 60 amps of power must be available to ensure proper furnace operation.

PRICE: $14,000 single-phase power ($16,000 three-phase power)

200-LB. (20-kW) FREESTANDING POT FURNACE — TOP LOADING

Comes with your choice of crucible (capacity up to 200 pounds). Purchase includes two spare
Molybdenum Disilicide heating elements.

At least 60 amps of power must be available to ensure proper furnace operation.

PRICE: $18,000 single-phase power ($22,000 three-phase power)

300-LB. (30-kW) FREESTANDING POT FURNACE — TOP LOADING

Comes with your choice of crucible (capacity up to 300 pounds). Purchase includes three spare
Molybdenum Disilicide heating elements.

At least 100 amps of power must be available to ensure proper furnace operation.

PRICE: $24,000 single-phase ($25,000 three-phase power)

400-LB. (40- or 45-kW) FREESTANDING POT FURNACE — TOP LOADING

Comes with your choice of crucible (capacity up to 400 pounds). Purchase includes three spare
Molybdenum Disilicide heating elements. Single- phase power is a 40-kW unit; three-phase power
is a 45-kW unit.

At least 100 amps of power must be available to ensure proper furnace operation.

PRICE: $30,000 single-phase or three-phase power

600-LB. (60-kw) FREESTANDING POT FURNACE — TOP LOADING

Comes with your choice of crucible (capacity up to 600 pounds). Purchase includes three spare
Molybdenum Disilicide heating elements.

At least 200 amps of power must be available to ensure proper furnace operation.

PRICE: $40,000 single-phase or three-phase power

FREESTANDING POT FURNACE — FRONT LOADING

A design for a front-loading furnace (the crucible is changed through the front of the furnace instead
of the top) is complete.

PLEASE CALL FOR PRICING AND MORE INFORMATION.