I've used them as well, I'm sure it's OK, but curiously I've noticed that a lot of component leads are magnetic, so not sure what they're made of exactly, but some are more than just tinned copper.
I've used them as well, I'm sure it's OK, but curiously I've noticed that a lot of component leads are magnetic, so not sure what they're made of exactly, but some are more than just tinned copper.