Maybe it depends on the coil/power source. When I tried it I was just messing around with a coil I had and 12v source and it was not that effective.

Putting a tool in a powered coil will magnetize it temporarily but I don’t think it will stay magnetic or at least not for long. They sell little magnetizers that you can get cheap that will last a lot longer though if that’s what you’re looking for…

I have one like this around somewhere that worked well when I tried it.

https://www.amazon.com/Ullman-No-Specialty-Magnetizer-Demagnetizer/dp/B00829S1JI/ref=sr_1_13?keywords=magnetizer&qid=1694044940&sr=8-13

Do you mean to use it to magnetize objects?