Location: Otakon 2026 | Walter E. Washington 144C - Crafts Room

Class Length: 2 hours

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This class is a semi-hands on workshop in metal casting techniques. Students will assemble a small frame (a "flask") and prepare a sand mold for a classic D6 dice, usable in board games and TTRPGs. The instructor will show a setup for metal casting, and will then pour tin into the students’ molds. Once cooled, the students will be able to remove their parts from the mold, and be guided through sprue removal and part cleanup. We will also cover what a “backyard” metal casting setup for other metals might look like, and discuss different mold-making methods for metal casting. 

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In this workshop you'll learn:

• Safety precautions and the proper setup for working with metal casting
• How to prepare a flask frame and sand mold
• Proper technique for cleaning up metal-casted parts
• How to use other mold making techniques with metal
• How to begin metal casting at home

Prerequisite Skills:

None – beginner friendly

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About the Instructor:

StarsOfCassiopeia (she/her) has been crafting award-winning mixed media cosplays since 2007. Cass graduated from Harvard with a degree in Engineering, has developed multiple printing technologies as a professional in the 3D printing field (Formlabs, Studio 3e8), and loves combining that professional design experience with historical design influences and elaborate hand-sewn detailing. In addition to 8+ years of experience teaching panels at cons, she also taught Intro to Making at MIT, and co-founded the cosplay commission-centric website Cosmosii.com.

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The Nitty Gritty:

• To participate in this workshop, a liability waiver must be completed for all participants
• Anyone under 16 years of age MUST be accompanied by an adult or legal guardian
• Space is limited and all tickets are first come first serve
• Purchasing a ticket reserves one (1) seat at this class. For multiple tickets, please add more than one ticket to your cart
• All tickets are final sale. In the event of a no-show, no refunds will be available
• Tickets will be delivered digitally to the email address provided at checkout. This digital ticket will be needed to enter the event.
• All classes start promptly at the time they're scheduled for. In the event of tardiness, you may miss certain aspects of the class and may not be able to complete the scheduled project in full.

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Our Sponsors for the 2026 Otakon Cosplay Studio: