I find using a wire wrap tool helps to hold the wires in place until they are soldered. Now days I am inclined to use a less pretty method using hot glue as is shown in my other instructable at the following address. https://www.instructables.com/id/Arduino-BiCMOS-Curve-Tracer/ The components are all installed in dead bug fashion. It is not as pretty. But for me, it is much faster and easier. I use the hand wire wrap tools.