In essence, there are many variations but box clasps all have a
couple of things in common: a box or housing with a ledge that
catches the end of a spring-like tongue, when inserted into it.
Complete descriptions along with close up photos of two variants
appear in my book, Professional Goldsmithing: Chapter 18 (Box Clasp)
and Chapter 19 (Cylinder Clasp).
Also, Tim McCreight will be teaching a weeklong class at the Revere
Academy in April, here in San Francisco. His class entitled, “Click,
Snap, Swivel: A Survey of Jewelry Mechanisms,” will cover many
For more info on our books and classes, check out the website:
Hope that his helps, Alan
Revere Academy of Jewelry Arts
760 Market Street - Suite 900
San Francisco, CA 94102
tel: 415-391-4179 fax: 415-391-7570