Since solder is such a poor conductor, why use it?

Timrhu, yes solder is awful now. It cracks.

Joeylawn36111, There are very localized welders that would not influence the circuits.

Almarg, I've learned that too often dismissing the impact of improvements is entirely wrong. Electrical Engineering doesn't know everything.

Why don't you make a preamp asap.

09-25-15: Tbg
Timrhu, yes solder is awful now. It cracks.

I don't doubt your word if you have experienced that, but it needn't be so. Consider the hundreds of thousands and in many cases millions of solder joints in the avionics systems of military aircraft, which are accomplished mostly by automated soldering processes. Those seem to do ok, despite being exposed to extremes of vibration, temperature, and other environmental factors.

Regards,
-- Al

Less talk, more action. Just do it! Prove the world wrong. Make it so! make it magnetic too while at it. The world will be a better place.

PS, BTW if you make it magnetic, please also make it affordable as well for poor shlubs like me. No 4000X markups like some prescription drugs. Make the world a better place!!!!!