Working with Castalot with Michael Dupille Lecture ~ November 20, 2025

Castalot was developed by art glass pioneer Michael Dupille and has been on the market since 2000. It is a fast-setting, refirable mold material used for glass slumping, fusing, or kiln casting applications. From jewelry to monumental sized work, it has become a go-to material for artists looking to replicate multiples without having to make a new mold each time.

During the course of this lecture, Michael will discuss the benefits and uses of this remarkable material, show samples of finished projects, and walk through the process of making a mold, including model preparation, mixing, pouring, and demolding.

Join Glass Patterns Quarterly® and Master Artisan, Michael Dupille, for this one-hour Glass Expert Lecture™ on Thursday, November 20, 2025, at 8:00 - 9:00 p.m. Eastern, 7:00 - 8:00 p.m. Central, 6:00 - 7:00 p.m. Mountain, and 5:00 - 6:00 p.m. Pacific. For our international customers, you may use this Time Zone Converter.

—No Traveling Required!

Please be sure that the email address you provide on your order is the one you wish to use to receive webinar information. You will receive a reminder email the day before the webinar. Please read it carefully as it will contain important instructions about the webinar process. On the day of the event, you will receive an e-mail with a link that will allow you to access the workshop 15 minutes before showtime. Sign in as a guest using your first and last name.

For the best possible webinar experience, we suggest using a desktop or laptop computer with a fast, stable internet connection. If you have trouble connecting, try using a different internet browser. For help with Adobe Connect call 800.422.3623.

Within a week after the live webinar, everyone who purchases the class will receive an e-mail with the link to the class recording that will provide unlimited viewing with no expiration date! Watch as many times as you like for as long as you like. Participation in the live event is not required to receive the recording.

Seattle resident Michael Dupille has worked in art his entire career as both creator and educator.  Experienced in a variety of media  including animation, illustration, print, and textile design, he continues  to challenge himself through invention and innovation.

Michael was part of the glass blowing program at Central Washington  University in the early 70’s.  Since the late 1980's he has worked extensively with glass, having  developed and refined a technique for 'painting with glass' that uses  crushed glass (frit) in combination kiln fired methods. He refers to this  process as fritography.  Michael pioneered many kiln forming  processes, especially in the area of mold making and kiln casting.

He has done design work for Bullseye Glass, was a guest artist  and  instructor at Camp Colton, and his creative input is well featured in  Boyce Lundstrom's books on art glass techniques. His work is highly collectible and his numerous public and private commissions include  projects for the Washington and Oregon State Arts Commissions,  The Everett Cultural Commission, The Seattle Times, The Pierce County Arts Commission, Amazon.com,  the Seattle Mariners, and the Washington State Arts Commission.