It's used for water lines. Would it be safe for cake structures?

Should be...copper pans, copper cookie cutters, copper molds, etc...but maybe one of the experts will weigh in on it

It's also used for utensils, mixing bowls, serving dishes, cookie cutters, jello molds....of course it's food safe.

The only thing I would watch out for is lemons, limes, the highly acidic foods. There could be a chemical reaction. Nothing toxic they just might turn green.

Mike

Ok so far so good. What about the soddering (sp) conections? I'm making for my antler forms. The packaing for the sodder says it can cause problems.

Mabe if I cover that part in floral tape?

Acidic foods and liquids cause the copper salts to leach out of the metal
and into the food item. This results in acute copper poisoning.

Principle features of poisoning by ingested copper compounds have been:
- gastrointestinal irritation, abdominal pain and diarrhea, sometimes with
blood.
-headache, sweating, weakness, and sometimes shock
-liver enlargement and jaundice
-destruction of red cells and presence of abnormal hemoglobin
-elevated levels of albumin (a form of protein) in urine, hemoglobin in
the urine and sometimes acute renal failure.

Trace amounts of copper are needed in our diet, particularly in the
formation of hemoglobin. It is also believed to have some benefit (by
some) with the immune system. It takes very little excess though to cause
problems.

Solder is made with lead so that's a problem too......I suggest you go with the copper and lead solder for your antlers and cover the whole thing in chocolate or whatever medium your using but don't allow your guests to eat food that was in direct contact with the copper or solder.

Yeah, I wouldn't chance it with the solder.

That answers that question! Thanks!

I did find out that there is a lead free solder.

yea!!