[Chas]

Sprague Kwikette Soldering Aid

Still used today but make your own...

https://www.antiqueradios.com/forums//vi...6&t=192722

I forget if those little coiled up wires are called squigs or quigs, but I think that Bill Turner used to sell a tool to help making them. It was basically a wooden dowel with a hole in one end and little steel pin for wrapping the wire on.

For NOS

https://www.ebay.com/itm/305164887818

Some refurbishers use these extensively as one does not have to clean out a terminal to get the lead of a replacement part installed. Avoids roasting a terminal strip or breaking a tube socket terminal. Adding heat shrink completes the joint.