Paul Wissmach Glass Company

Question 1

What is glass made of?

Accepted Answer

Our glass is made from a blend of limestone, soda ash, and sand. However, we add a unique mixture of chemicals and compounds to create our distinct palette of colors, with most of our recipes being over a century old.

Question 2

What is art glass?

Accepted Answer

Art glass is a versatile material available in various shapes, colors, and thicknesses. It is used to create a wide range of items, including window panes, lamps, and various other forms of artistic and functional pieces.

Question 3

What is a glass kiln?

Accepted Answer

A glass kiln is a specialized oven used for heating glass to high temperatures to shape, fuse, or cast it into desired forms.

Question 4

What is the melting point of glass?

Accepted Answer

The melting point of our glass when raw materials are put into a furnace is about 2200°F (1204°C). Most common types of glass, like soda-lime glass, have a melting point between 2552°F to 2912°F (1400°C to 1600°C). Other types of glass, such as borosilicate glass, melt at a higher temperature, typically around 3002°F (1650°C). These high temperatures are required to transform solid glass into a workable, molten state for processes such as glassblowing, fusing, and casting.

Question 5

What is glass fusing?

Accepted Answer

Glass fusing is a technique in which pieces of glass are heated in a kiln until they melt and fuse together.

Question 6

What is slumping?

Accepted Answer

Slumping is a glass forming technique where a sheet of glass is heated in a kiln until it becomes soft enough to “slump” or sag into a mold, taking on the shape of the mold.

News

Save the Date – 2026 Fall Factory Sale

Cutting Concentric Circles in Glass

U.S. Workers Are Paying More for Healthcare, and Next Year Will Be Worse – Wall Street Journal

Tips for Cutting Glass

Frequently Asked Questions: Does Wissmach still make ABC color?

New Residency Opportunity

Submit to the Stained Glass Quarterly!

A Community-Built Public Directory: The Glass Database

Call for Artists: 2026 North Star Glass Exhibition

Tips for Basic Firing Schedules of Wissmach COE 96

Frequently Asked Questions: Does Wissmach make standard colors?