Take apart any old switch mode power brick, rip off the transformer and unwind the enameled copper wire. Use an Xacto knife to carefully and completely remove the enamel from the entire circumference and test if it wets with solder in 360° before adding it as a replacement.
For my own etched designs that need mechanically solid through holes and for repairs/mods where I need to make a soldering contact, I keep a set of brass micro rivets. The smallest ones I have are 0.9mm and work great with a 1mm hole in the PCB. If you’ve never seen or tried this, no special tools are needed. Place the rivet in the hole and use a pointy object like a dental pick to expand the back side.
Take apart any old switch mode power brick, rip off the transformer and unwind the enameled copper wire. Use an Xacto knife to carefully and completely remove the enamel from the entire circumference and test if it wets with solder in 360° before adding it as a replacement.
For my own etched designs that need mechanically solid through holes and for repairs/mods where I need to make a soldering contact, I keep a set of brass micro rivets. The smallest ones I have are 0.9mm and work great with a 1mm hole in the PCB. If you’ve never seen or tried this, no special tools are needed. Place the rivet in the hole and use a pointy object like a dental pick to expand the back side.