Advanced Creative Metal Forming

Course Description

About this course

If you've got the basics of synclasting, anticlasting, and spiculums, but want to learn more, then get ready to ramp up your skills in this virtual workshop! We will combine synclasting and anticlasting techniques with foldforming, and will learn how to do Selective Synclasts, HPX, Anticlasted Ribbons, and Synclastic Spiculums.  Also, learn how to fit and solder two forms together to create a Bi-Shell.  

Demos will be followed by in-class work time, with the instructor available for real-time assistance. Students will need two devices: laptop, desktop, or tablet for watching demos, and phone or tablet camera for instructor to see and help during work time.

Hammers, stakes, metal and other tools can be purchased and arranged for through AllCraft.

This course will consist of three sessions. Each session will consist of the following:

  • Demonstrations and work time from 10:00AM to 12:30PM
  • Off-camera lunch break or independent work time from 12:30PM to 2:00PM
  • Demonstrations and work time from 2:00PM to 4:30PM

For more information about virtual courses, visit our Virtual Course FAQ page. 

Please read the Materials & Tools tab!

Meet the Instructor

Cynthia Eid

Whether using hammers and stakes, or hydraulic press tools, Cynthia's sculptural jewelry and hollowware shows her focus on exploring the fluidity with which metal can be moved, formed, and joined.

Cynthia Eid co-authored the book Creative Metal Forming, with Betty Helen Longhi, published in 2013 by Tim McCreight's Brynmorgen Press. In his foreword for the book, Michael Good says the authors "have succeeded in assembling the first comprehensive textbook on synclastic and anticlastic forming." (More about the book available at  

Cynthia and Betty developed a set of anticlastic stakes, and Eid also works with Knew Concepts and Bonny Doon to help make tools for jewelers and metalsmiths. Lee Marshall has dubbed Cynthia Eid "Godmother of the Knew Concept Saws" since it was her idea for him to produce these saws for jewelers.

Excited about working in sterling silver without the problem of firescale, Cynthia has been working with Argentium Silver since 1999. After meeting Peter Johns (the inventor of Argentium Silver) in 2003, Eid has participated in AS's development. Argentium International, Ltd recognizes her as a Pioneer.

Cynthia Eid's metalwork has won awards for creativity and design, been featured in many publications, and been exhibited internationally. With a BS in Art Education and MFA in Jewelry, Design, and Silversmithing, she has previously worked as a bench jeweler for fine goldsmiths, a model-maker in a gold jewelry factory, and on private commissions. Her work is in museums in the US and UK. Currently an independent metalsmith and educator, she teaches weekly classes at Metalwerx in Massachusetts, and workshops and short courses in the US, Canada, Europe, and Australia.


Materials & Tools 

Students will need the following tools or something similar if they plan to actively participate in this workshop. (If you are not sure about a tool, email photos of your tools to Cynthia Eid at [email protected] to discuss.)

  • Planishing Hammer call Allcraft or Rio Grande
  • Plastic mallet that is crosspeen on one side -call Allcraft or Contenti
  • Fretz HMR-109 - call Allcraft or Rio Grande
  • LH-4.5 hammer - call Allcraft
  • LH-5  hammer - call Allcraft                   
  • 2 feet or more Medium wire silver solder  - call Allcraft or Rio Grande
  • 1 foot or more Easy wire silver solder  -call Allcraft or Rio Grande
  • Fretz-Michael Good End Hook stake set or a large and a small steel sinusoidal stakes  
  • Heavy Duty Vise  Amazon
  • Fretz HMR-108 – call Allcraft or Rio Grande
  • 24 gauge Nugold sheet- one 12” x 12”  or two 6” x 12”  Call Allcraft or Rio Grande
  • Half-round/flat combination pliers (one steel half-round jaw/one plastic flat jaw) call Allcraft or Rio Grande
  • Ring mandrel without size markings on at least one-third of surface Contenti or call Allcraft
  • Torch - Smith Silversmith Rio Grande, or large butane Cool Tools
  • #2 or #3 tip if using Smith Silversmith Rio Grande
  • Scotchbrite pad (Amazon)
  • Black Flux-Handy Flux Type B-1 Rio Grande
  • Binding Wire, Black Iron “Stovepipe” or Stainless Steel 22 gauge – Amazon or Rio Grande
  • jewelers saw Rio Grande
  • pack saw blades - 2/0 Rio Grande
  • burlife / bee's wax Rio Grande
  • bench pin Rio Grande
  • half round hand file - #2 cut (Rio Grande
  • Three or more 2” x 4”  pine blocks- about 4” tall. Watch for scraps from constructions sites, or buy at Home Depot or Lowes. 

Optional but recommended: 

  • Bonny Doon Urethane Hammer   Rio Grande
  • Hard Red Urethane Inserts   Rio Grande
  • Ultimate Spiculum Hammer or the equivalent  Allcraft
  • Large round Bur for Carving Depressions   Rio Grande
  • 78-02 hammer  - call Allcraft
  • Fretz HMR-109 - call Allcraft or Rio Grande
  • Fretz HMR-401 hammer - call Allcraft or Rio Grande
  • Soft Plastic Vise Jaws For holding wooden hammer handle in a vise  Amazon
  • Hard Plastic Vise Jaws for holding steel mandrel in vise   Amazon
  • Small, Medium, and/or Large Eid/Longhi Anticlastic Stake(s) or equivalent call Allcraft or Rio Grande
  • Bur for carving depressions  Rio Grande
  • 1 x rotary tool - flex shaft, micro motor, etc. Rio Grande
  • Sanding discs for flex shaft-220 grit  Rio Grande
  • Book: Creative Metal Forming (Personally inscribed to you if you buy from author’s site:
  • 3% Hydrogen peroxide – from local Pharmacy or Amazon

Torch setup:

You will need a laptop, desktop computer, iPad, or tablet as well as a secondary video device with a tripod or holder (such as a smart phone) connected to the Zoom meeting so that the instructor can see and assist you. 




Cynthia Eid


April 25 -29, 2022


10:00 AM -4:30 PM


3 days

Intermediate and above

No Class Dates

April 26

April 28

Virtual - Eastern Time Zone
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