Wort chiller?

Is there any adverse effects in taste if i have sweated copper fittings on my wort chiller. i was wondering if the solder will leach into the beer.
I want to add about 15 ft of copper to my homemade chiller. I have a 50ft coil of 3/8 and want to add the 15 ft of 1/2 i have laying around.

Use lead free solder and yo will be fine.

Plumbing solder has been lead free for >20 years, there’s no problem using this even with boiling liquid. However, you’re not going to see much if any benefit by adding 15’ more to a 50’ chiller. I would save that copper for other projects, like a whirlpool arm for the chiller or a pickup tube.