Beads and Yarn

Classes & Events


Lost Wax Casting 2 - Molds and Found Objects

Wednesdays, September 22, 2021 - October 13, 2021, 10:00AM - 1:00PM PT (Pacific Time)

In Person Class

Cost: $325.00

SOLD OUT! See below for other workshop dates.

Online Class

Cost: $295.00

SOLD OUT! See below for other workshop dates.

(place mouse over image for larger view)

This class expands on wax working techniques, introducing techniques for making molds and using found objects to quickly generate detailed wax models. With molds, you can not only save and reproduce your designs, but you can also sample the world around you and integrate it into your castings, with molds of plants, found objects and lots more.

This course is available as an in-person workshop or live online class, and as a 4 week course or 2-3 day workshop. Please check this page for times and formats available.

First, we focus on molds that can be made in a home studio, using home friendly materials and techniques without any expensive equipment. We’ll pour RTV silicone molds without a vacuum investment machine, create fast alternative molds that can be ready in less than 20 minutes, and fill molds without a wax injector. 

We’ll also demonstrate how to use casting equipment to help with your mold making, including vulcanizers for rubber molds, wax injectors, and using vacuum investment machines for getting rid of air bubbles in your molds.

And finally, we’ll explore using found objects to create jewelry. Anything that can burnout efficiently can be used to make a casting, including leaves, twigs, flowers, seeds and nuts. All of the texture, beauty and detail of found objects can be cast into metal, and then molded for reproduction.

Four weeks of classes will help you practice what you've learned so far, add lots of new skills to your repertoire, and leave you inspired.


After Lost Wax Casting 1, the lost wax casting series (2, 3 and 4) can be taken in any order. 

Casting your models made during class is included.


Lost Wax Casting - Molds and Found Objects teaches the following
• Vulcanized rubber molds

• RTV 2 part silicone mold
• 2 part putty molds
• Alternative mold materials suitable for wax
• Cutting open molds

• Troubleshooting molds
• Using wax injectors
• Making and using molds at home without big equipment

• Cleaning up waxes injected from molds
• Combining injected waxes into new designs
• Choosing, modeling with, and casting found objects

A kit of materials and stones is included with this class.

Online students will have kits mailed to them. Kits for in-person students are delivered at the beginning of the first class. International students may be charged an additional amount for shipping, because of the increased cost to ship abroad. Also, shipments to other countries may incur a tariff payable by the student. International students are welcome to contact us re: these costs and options for their materials. 

Please review our COVID-19 guidelines for in-person students. 
For the health and safety our staff and students, students are required to show proof of vaccination and to wear masks when attending classes at our school. If you can’t meet these requirements, we invite you to take the online version of this class instead, if available. Please visit our COVID-19 Updates page for more information.

A full color handout is included with the class. Create your own workbook with the beautiful handout that is downloadable for this workshop. Handouts include instructions for techniques and projects, reference charts and lots of information to support your learning.

Recordings of class.
If a class is online, or is a combination online and in-person session, all students receive a link to a recording of the class demonstrations. In-person only workshops are not recorded.


Tools Required for Online Students
This is a list of tools online students need to practice the techniques shown in class. (in-person students have tools to use at school)

A list of tools with links to recommended suppliers for the best prices will be sent to you after registration If you have questions about the tool list, please contact us.

Online students will need the basic tools that were required for the Lost Wax Casting 1 - Basics class.

In addition, the following tools are required:

Electric scale (must be able to weigh over 100 grams)
RTV Silicone Mold Making Rubber (brands recommended are in supplies list) - 1
Castaldo U Shape Mold frame for RTV Compounds - 1
Injection wax (Freemans Red or Super Pink) - 1 lb
Xacto knife and spare blades
Steel spoon or jam ladle
Stir sticks (wooden popsicle sticks or plastic sticks) - 3
Gloves - latex, nitrile or vinyl, in your size
Assorted disposable plastic containers, like left over food containers (from yogurt, etc)
White vinegar
Steel cup with handle - 1
Electric single burner hot plate

A computer, phone or tablet to use the free Zoom app for class 
Safety glasses



About Our Interactive Online Classes

If this class is offered online, it uses the Zoom app/website. Through Zoom, you’ll be able to see demos and follow instructions, ask questions and interact with your instructor. Zoom is easy to use and free for students to use for class, and works on most devices, like phones (iPhone, Android, etc), tablets (iPads, etc), and computers (Mac or PC).


Your instructor is also available during free Zoom office hours for questions and help.

Online students work at home or in their studio. All of our recommended tools and the kit materials are chosen to be home studio friendly. Links to preferred vendors are provided in the supplies list sent after registration.


Read what students have to say about our online classes on the testimonials page.

Class policies for refunds, transfers and cancelations.



Students must have basic wax model making skills, like completion of a lost wax class, including skills in wax work, like wax carving, build up and how to use a wax pen. For example, our Lost Wax Casting 1 basic class, in person or online. This class will specifically use carving waxes and injection waxes to make models.

Location: Silvera Jewelry School, Berkeley, CA

Instructor: Joe Silvera

Upcoming Schedule

Date & Times Register
Wed. Mar 9, 6:30PM - 9:30PM PT (Pacific Time),
Wed. Mar 16, 6:30PM - 9:30PM PT (Pacific Time),
Wed. Mar 23, 6:30PM - 9:30PM PT (Pacific Time),
Wed. Mar 30, 6:30PM - 9:30PM PT (Pacific Time)

In Person Class

Online Class

Lost Wax Casting 2 - Molds and Found Objects

Click on image for larger view