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How to Choose a Grinder: 2-Part vs. 4-Part, Diameter, and Materials

How to Choose a Grinder: 2-Part vs. 4-Part, Diameter, and Materials

Alyssa Reed |

TL;DR

  • Daily driver: 4-part metal grinder in 2″–2½″ for kief + consistent fluff.
  • Travel/pocket: 2-part metal in 1½″–2″—tiny, fast, no fuss.
  • Material: Go metal for durability, smooth threads, strong magnets.
  • Big sessions: 4-part, 2½″–3″ for torque and batch grinding.
  • Care: Tap/brush weekly; deep clean with iso (dry fully). Avoid long soaks on anodized parts.

Grind time, good time. If you’ve ever wrestled a brick of herb into a bowl and wondered why it didn’t hit right, your grinder is the silent MVP you’re missing. This guide keeps it simple—what size (in inches) to get, whether a 2-part or 4-part is your vibe, and which materials actually last. We’ll even point you to durable metal grinders when you’re ready to level up.

Quick Picks (No FOMO, Just Promo)

  • Best all-around: 4-part metal grinder, 2″–2½″ diameter (daily driver with kief catcher).
  • Fast & pocketable: 2-part metal grinder, 1½″–2″ diameter (simple, slim, travel-friendly).
  • At-home heavy use: 4-part metal grinder, 2½″–3″ diameter (more leverage, more stash, more kief).
  • Budget buy: Acrylic/wood works in a pinch—upgrade to metal for longevity.

2-Part vs. 4-Part: Which One’s Your Grind Mate?

2-Part (a.k.a. 2-piece)

  • Pros: Light, compact, fast clean-out; fewer threads = fewer crumbs stuck in limbo.
  • Cons: No kief screen; grind can be slightly less uniform if you overpack.
  • Best for: Minimalists, festival kits, quick sessions.

4-Part (a.k.a. 4-piece)

  • Pros: Middle chamber catches fluffy flower; bottom screen collects kief for power-ups later.
  • Cons: A bit heavier; more parts to scrub during cleaning day.
  • Best for: Daily drivers, terp hunters, anyone who likes a little kief dividend.

Diameter: Size (in Inches) Really Does Matter

  • 1¼″–1½″ mini: Tiny, stealthy, just enough for one quick bowl. Great on the go.
  • 2″ standard: Goldilocks size—easy to palm, holds a gram-ish, smooth twist.
  • 2½″ roomy: Extra torque and capacity; less refilling, more chilling.
  • 3″+ jumbo: Station-piece energy—batch grind for groups or pre-roll marathons.

Materials: What’s It Made Of (and Why You Should Care)

  • Metal: Durable, consistent grind, strong magnets, smooth threads. If you want a grinder that outlives your lighter collection, go metal.
  • Wood: Aesthetic and tactile. Usually 2-part; gentle on herbs but needs more care and can swell if wet.
  • Acrylic/Plastic: Budget-friendly and light. Works fine short-term, but teeth and threads wear faster.

Teeth, Threads & Other Nice-to-Haves

  • Teeth style: Diamond-cut or “shark” teeth give an even, fluffy grind without pulverizing.
  • Magnetic lid: Keeps your herb where it belongs—inside the grinder, not your backpack.
  • Screen & kief: On 4-parts, look for a snug screen and a kief chamber you can actually scoop. Bonus points for a scraper tool.
  • Grip & grooves: Knurled edges save wrists. Your future self says thanks.

Care & Cleaning: Keep the Grind Divine

  • Weekly quickie: Tap out crumbs, soft brush the teeth and screen.
  • Deep clean: For metal, disassemble and wipe with isopropyl-dampened cotton swabs; rinse and dry fully. (Avoid soaking anodized parts for long periods.)
  • Stuck threads? A tiny drop of food-grade mineral oil on threads (wipe excess) can help, but keep it off the teeth and screen.

Picking Your Price Tier

  • Under $25: Acrylic or basic metal 2-part—great starter or spare.
  • $25–$50: Sweet spot for 4-part metal with kief catcher.
  • $50+: Premium machining, tighter tolerances, larger diameters, travel cases.

Final Hit

Go 2-part for speed and pocket use, 4-part for the long game and kief. Aim for 2″–2½″ if you’re unsure, and choose metal when you want smooth threads, strong magnets, and years of service. Your bowls (and your wrists) will thank you.


For adults 21+ only. Keep out of reach of children.

Next step: Browse our latest metal grinders and snag the size that fits your sesh.