I understand this problem well. I had a series of pins which were
pierced out the shape of a head, "Head Pins", and the brain section
was a bezel soldered to the copper base. I had a devil of a time
trying to solder a rather large bezel to these brooches which were
nearly two inches long.
Here is what I did to achieve success.
1) You need a GOOD copper cleaner. I liked using Penny Brite
Penny Brite completely degreases the copper, and combined with clean
flux, is essential for getting the solder to flow. Dry your copper
well with a towel. Handle by the sides.
2) Copper eats heat, so you need a good blast. Flux your seams, you
don't need to flux everything. Heat the piece from UNDERNEATH. I
usually hold my work in a cross lock tweezer, rather than the large
Your soldering job should go well.
BTW, I just ran a soldering 101 workshop using Hoover and Strong
wire silver solder. Great stuff!
M E T A L W E R X
50 Guinan St.
Waltham, MA 02451
Ph. 781/891-3854 Fax 3857
Jewelry/Metalarts School & Cooperative Studio