Well over a year ago several people reported issues with their Flower Mill herb grinder. The toothless grinder claims to 'mill' the nugs instead of crushing
Flower Mill Standard Edition with Ring
PSA] If you're using an unmodified premium flower mill, this is the fine metal dust scraping off when you grind. I don't trust their plastic gasket solution because this was advertised as
The Flower Mill Grinder: A Ganjier Review - Written By Rob Sanchez — Fat Nugs Magazine
What's the Best Weed Grinder?
They didn't fix the flower mill : r/vaporents
Dust on brand new premium mill : r/FlowerMillUsers
What's the Best Weed Grinder?
FlowerMill Weed Grinder (finally) Addresses DANGEROUS METAL DUST ISSUE
Premium Edition Flower Mill
FlowerMill Weed Grinder (finally) Addresses DANGEROUS METAL DUST ISSUE
Flower Mill Review: Going Beyond Grinding