Erica Synths DIY Eurorack Case and Power Supply Kit for EDU Modular System (84 HP) - Manual (Page 6)

6
Next step – prepare a DC socket. For a
better solder joint, use a file to clean the
chromium coating from the socket lugs
and increase the temperature setting on
your soldering iron to 400 o C. Solder two
wires to the lugs as shown in the picture
below:
For safety, use small pieces of heat
shrink tubes to insulate solder joints
and heat them with a lighter to make them
shrink around the lugs: