Can I patch leaks in copper plumbing? Have I done it? Yes. Does it last? For a bit. Patching in replacement pipe is usually the best fix, but I've had success using homemade pipe repair clamps ...

Copper pipe corrosion is the leading cause of leaks ... but I've had success using homemade pipe repair clamps, which for me is a hose clamp and a piece of rubber to make a watertight seal over ...