Can anyone tell me what this might be used for? I found it in a box with some other electrical things, but I don't recall when I got it. It might have come with another tool like a soldering iron.
It's definitely injection molded, and appears to be glass filled nylon as far as I can tell. There are no markings on it.
It is a soldering aid tool.
Used for holding components down while soldering.
The slot is for manipulating wires.
Very late answer: it's a "pot twiddler" for adjusting trimmer potentiometers (variable resistors) and capacitors. It's plastic so as to be non-conductive and fairly low capacitance, "wire holders" etc. are usually aluminium to withstand heat but not be solderable.
Some of the "high end" ones, e.g. made by Bourns, have a small piece of brass shim as the screwdriver tip to make it last longer... I've got one somewhere which must be 30+ years old. There are comparable tools for getting inside inductors, but these are much less important than they used to be in the days of superhet radios.
Actually, while a pot twiddler looks a lot like this, this is actually called a spudger and is used for manipulating very fine wires in cross connect panels in the old days of telephone cross connects. Those things used to be worth their weight in gold, and I still have three or four of them that I used when I was working in the industry.
