Weed Grubber - made using an old strimmer and car alternator armature

[N00b Machinist]

Devil’s Advocate here: I imagine the string portion of a trimmer is to minimize damage to non-weed bystanders, e.g., stakes, mailbox posts, ankles, etc. What you’ve got there is a blunt pole saw. Useful, to be sure, but additional care, I expect, is necessary to avoid tearing up things you don’t want tore or launching stones or cans or other FOD at those nearby, including yourself. Also kickback - that’s going to kick back much harder than a string on a spinner.

In the right hands, a masterful tool. I can imagine myself f**king things up spectacularly in my own.