I have an old amplifier I fixed for a coworker (now 3 years) unfinished because part of the battery compartment was so corroded. And Also I Am A Bad Person.
I'd like to finish so need to etch/create a new PCB for the battery contacts. Previously it used a weird spring, but wasn't so much soldered as it was pushed through the hole to hold it. They corroded off, and so did all of the traces.
I have the image to work from, but what is the best way to solder a spring? I have some 'copper' ones from higher powered flash lights, and I thought about making a disk with a small trace leading from it for the thru-hole insertion of the power wire. Then I could plop a big chunk of solder down onto the copper where the spring rests and allow that to hold it in place.
Trying to do the toner transfer with acetone but I may just end up using a sharpie to draw it. I'm having trouble learning new ideas lately since a stroke.
Thanks for advice on soldering springs.