Plumb Bob Mk1 (w/ Printer Nozzle Tip)

Here is a plumb bob tool. It is more or less based from this tool (https://www.amazon.com/dp/B000IOCO2A/ref=twister_B09NBJW4D9), except that the tip is from a 3D printer nozzle.

The body is hollow so that you can fill it up with steel BBs, lead fishing split shot sinkers, rusty nuts or whatever you have laying around. Thread a line through the cap and screw the two pieces together. The top cap is designed so that you can use it as a spool for the line when not in use. The hole for the nozzle is not threaded but you should be easily able to self tap it.

This object was made in Tinkercad.
Edit it online https://www.tinkercad.com/things/4GoOzBFyILf