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Hi, how to prevent black particles from forming in the soldier. I clean the tip but it can be lack of flux or the technique?

I'm making a 2'x2' copper foil panel that will be laid flat as a skylight. What do you suggest for reinforcement?

I am a beginner, I would like to know what the best temperature for 60/40 solder is? Plus, I am having problems finishing off the corners to boxes. Any ideas.

@loveofpoms If you wish to make the repairs yourself, you can use your regular stained glass tools. You can find helpful instructions for making the repair in a book such as "Making Stained Glass Lamps" or "Stained Glass Basics".

@[email protected] Zinc, brass and copper came can all be cut using a metal cutting blade on a saw. If you are only making an occasional cut, a small hand saw such as the X-Acto Razor Saw and a miter box are suitable. If you intend to use rigid metal came frequently, you may prefer a power saw that will make precise cuts quickly such as the Power Miter II Chop Saw or Gryphon Came Saw.

@Bsbruss There isn't an absolute rule about what size of panel requires a rigid came border. The structural integrity of the pattern and the way a panel will be hung or installed can influence the decision. Many glass artists use a rigid came border for projects that are 1 square foot or larger. For projects smaller than 1 square foot, additional options include simply tinning the edge, applying a piece of copper wire or braided copper wire to the perimeter, or soldering ball chain around the border to give a decorative touch and add strength.

@Bsbruss Sorry, meant maximum size you can make without a zinc border

What is the minimum size panel that can be made without using a zinc border? I'm making a 9" square diamond and am not sure if I should use a zinc border or if I can get by with soldering a piece of 20 gauge wire around the outside. Thanks

When adding a came border to a copper foil project it is easiest to assemble and solder the copper foiled pieces before placing it in the came border. Be sure to stop soldering approximately 1/4" away from the outside edge on the copper foil lines to allow the came to slip onto the edge of the glass easily. After soldering both front and back of the project, add your came border and finish soldering all the copper foil lines to attach the came border to the project at each point a solder line intersects the came.

How do you cut the zinc cane?