Tack Soldering

My instructions for my project is to tack solder another piece of glass onto another piece of glass. What does that mean and how do I do it?

It is a glass spoon that rests in a coffee cup and extends out of the cup.

Answer

You would complete the cup and the spoon separately, then lay the cup on the spoon (in the proper position) and solder the two together wherever a foiled edge of the spoon meets a solder line or an edge of the cup. It would be easier to turn the two pieces up side down with the spoon laying on the cup, otherwise the cup will wobble on the spoon while you're trying to solder them together.

The term "tack solder" actually means to solder two pieces together in just a few spots, only enough to make it hold together. Some people tack solder an entire panel before they do the final soldering (I'm not one of them!).