Herb Grinder Buying Guide: Teeth, Size & Materials

A grinder looks simple until you start comparing them. Teeth, size, material, number of pieces — here's what each one actually means for how it grinds.

Teeth

The teeth do the work, so look at them first. Diamond-shaped teeth are the standard for a reason — they shred evenly instead of mashing. More teeth means a finer, more even grind; fewer, chunkier teeth leave a coarser grind. If your grinder turns out dust one week and chunks the next, the teeth are usually why.

Size

Grinders are measured across the top, and the common sizes run from around 2 inches up to 3 inches or more. Smaller grinders are pocket-friendly and fine for a single session. Larger ones hold more and take fewer refills, but they're bulkier to carry. Match the size to how much you grind at once, not to how big your hand is — a grinder that's too small for the load just jams.

Pieces

A 2-piece grinder is the simplest version: top and bottom, grind and go. A 4-piece grinder adds a screen and a bottom chamber that catches the fine material (kief) as you grind. If you like the kief-catcher idea, go 4-piece; if you want simple and fewer parts to clean, go 2-piece.

Materials

Metal grinders (usually aluminum) are the workhorses — they last, the teeth stay sharp, and they clean up well. Acrylic grinders cost less and are light, but the teeth wear faster and they can crack. Wood grinders look good and feel good, but they're harder to clean and the teeth don't hold up like metal. For a grinder you buy once, metal is the safe money.

Cleaning

Whatever you buy, it grinds better clean. A quick brush-out after each use keeps the teeth from gumming up, and a deeper clean now and then keeps the lid turning smooth. A grinder that sticks is usually a grinder that needs cleaning, not replacing.

Shop herb grinders: https://420parts.com/category/grinders — flat $4.20 shipping, free over $60.