What's a grinder? LOL
We didnt have those in the 70's and I find them worthless.
Yes, you can grind up your weed and get the kief prize but
just pinch the seeds out of your buds and smoke the shit.
Make quality extracts in other ways.
Fuck Grinders, well not sandwich grinders...
are from back east... no one out west calls them grinders.. lol