Weed Grinders — Herb & Cannabis Grinders for Every Setup

Shop weed grinders at It’s 4:20 Somewhere — from compact 2-piece grinders perfect for travel to precision 4-piece grinders with kief catchers built for serious smokers. A good herb grinder isn’t optional: it breaks your cannabis down evenly for a smoother burn, maximises surface area for better extraction, and collects kief so nothing goes to waste. Whether you’re after a lightweight everyday piece or an aircraft-grade grinder built to last a decade, we carry brands trusted by smokers who know the difference. Backed by our Low Price+ Guarantee and 420% Satisfaction Guarantee, you’re always covered.

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What Is a Weed Grinder?

A weed grinder — also called an herb grinder or cannabis grinder — is a small device used to break cannabis flower into smaller, evenly sized pieces before smoking or vaporizing. Grinding your herb rather than breaking it by hand gives you a much more consistent grind, which translates to an even burn in a joint, bowl, or blunt and better airflow through a pipe or bong.

Most grinders are cylindrical with interlocking teeth that shred the herb as you twist the two halves against each other. They’re made from a range of materials — anodized aluminium being the most popular for its balance of weight, durability, and ease of cleaning — and come in sizes from pocket-sized 2-piece units to full 4-piece setups with dedicated kief collection chambers.

Types of Weed Grinders

2-Piece Grinders

A 2-piece grinder — also called a single-chamber grinder — is the simplest design available. It has a top grinding chamber with teeth and a bottom chamber that catches the ground herb. 2-piece grinders are compact, lightweight, and virtually indestructible, making them ideal for travel or anyone who wants something grab-and-go with no fuss. The Antidote Glass 2.5″ 2-Piece Grinder is a clean, no-nonsense option that gets the job done.

4-Piece Grinders with Kief Catcher

A 4-piece grinder adds a mesh screen and a bottom kief collection chamber beneath the main grind chamber. As you grind, trichomes (kief) sift through the screen and accumulate in the bottom chamber. Over time you build up a potent powder that you can sprinkle over a bowl, roll into a joint, or press into hash. The 420º Below 4-Piece Grinder and Empire Glassworks Aircraft Grade 4-Piece Grinder are both excellent 4-piece options — the latter is made from aircraft-grade aluminium for serious durability.

Electric Grinders

Electric grinders automate the grinding process entirely — load the chamber, press a button, done. They are especially popular among medical users or anyone who wants effortless grinding without manual twisting. If you grind frequently or in large quantities, an electric grinder saves significant time and effort.

How to Choose a Weed Grinder

Material

Aluminium grinders are the gold standard. Aircraft-grade anodized aluminium — like the Empire Glassworks grinder in our lineup — is lightweight, non-toxic, resists corrosion, and will outlast cheaper alternatives by years. Avoid grinders with plastic teeth, which wear down quickly and can shed microscopic plastic particles into your herb.

Number of Pieces

If you primarily smoke flower and want to collect kief over time, go with a 4-piece grinder. If you want something minimal and travel-friendly, a 2-piece grinder is the better choice. Either way, avoid single-piece grinders with no catch chamber — they make a mess.

Size

Grinder diameter is measured in millimetres. A 40mm grinder is compact and easy to carry. A 50mm grinder gives you more room to grind larger quantities at once without overloading the teeth. The 420º Below lineup covers both — 40mm for portability and 50mm for heavier sessions.

Teeth Design

Diamond-shaped teeth cut through dense flower cleanly without jamming. More teeth in an interlocking pattern means a more consistent, finer grind. Check that the teeth are machined into the body of the grinder rather than pressed in — machined teeth are far more durable.

How to Clean a Weed Grinder

A well-maintained grinder grinds better, lasts longer, and keeps your herb tasting clean. Here is how to clean it properly:
Place the grinder in the freezer for 20 to 30 minutes. This loosens sticky resin and makes the kief easier to collect.
Disassemble all pieces and use a stiff brush (a toothbrush works well) to sweep kief and debris from the teeth and screen into a clean container.
Soak aluminium components in isopropyl alcohol for 20 to 30 minutes. Swirl and agitate to loosen built-up residue.
Rinse thoroughly with warm water and allow all pieces to dry completely before reassembling. Never reassemble while wet — moisture causes sticking and can rust cheaper grinders.
For light maintenance between deep cleans, a few drops of food-grade mineral oil on the threading will keep the grinder turning smoothly.

Weed Grinders at It’s 4:20 Somewhere

We stock a focused selection of quality grinders from brands we trust — no cheap, imported junk that strips after three uses.

420º Below Grinders

420º Below makes reliable, well-priced grinders built for everyday use. Their 40mm 4-Part Gold Grinder is a sharp-looking compact piece with solid grinding performance, while the 50mm 4-Piece Rasta Grinder gives you more capacity and a vibrant finish. Both include kief catchers and are designed to last.

Empire Glassworks Grinder

Empire Glassworks is best known for their premium hand-blown glass, but their Aircraft Grade 4-Piece Grinder brings the same quality-first philosophy to aluminium. Machined from aircraft-grade aluminium, this grinder is noticeably more precise and durable than the typical mid-range option — a piece you buy once.

Antidote Glass Grinder

The Antidote Glass 2.5″ 2-Piece Grinder in Purple is a compact, clean grinder for smokers who want something simple and portable. No kief catcher, no fuss — just a reliable 2-piece that grinds well and slips into any pocket.

Why Buy a Weed Grinder at It’s 4:20 Somewhere?

Low Price+ Guarantee — we match or beat competitor pricing on all grinders.
420% Satisfaction Guarantee — not happy with your piece? We make it right.
Discreet Shipping & Packaging — no indication of contents on the outside of your package.
Free Shipping on qualifying orders — stock up without paying extra for delivery.
Trusted Brands Only — we carry 420º Below, Empire Glassworks, and Antidote Glass.

Frequently Asked Questions About Weed Grinders

What is a weed grinder used for?

A weed grinder is used to break cannabis flower into small, evenly sized pieces before smoking. Ground herb burns more evenly in a joint, bowl, or blunt, produces better airflow, and gives you a smoother, more consistent hit. A 4-piece grinder also collects kief — the potent trichome powder that sifts off during grinding — in a dedicated bottom chamber.

What is the difference between a 2-piece and 4-piece grinder?

A 2-piece grinder has one grinding chamber — herb goes in, ground herb comes out the bottom. A 4-piece grinder adds a second chamber below the grind chamber with a mesh screen, plus a kief catcher at the bottom. The screen sifts fine trichomes (kief) from your herb as you grind, collecting them for later use. If you want to collect kief, you need a 4-piece grinder.

How do I use a weed grinder?

Break your cannabis into small pieces by hand and load them into the teeth of the grinder — avoid putting material directly in the centre, as that is where the magnet sits. Place the top on and rotate it back and forth 8 to 10 times until the herb falls through the holes into the catch chamber. Open the bottom chamber to collect your ground herb. With a 4-piece grinder, check the kief chamber after several sessions.

How do I know when my grinder needs cleaning?

Your grinder needs cleaning when it starts to feel stiff or grinds unevenly. Resin builds up on the teeth and threading over time, which makes twisting harder and reduces grinding quality. A clean grinder turns smoothly with minimal effort. Most regular users should clean their grinder every 2 to 4 weeks depending on how often they use it.

What material is best for a weed grinder?

Aircraft-grade anodized aluminium is the best material for most users — it is lightweight, non-toxic, highly durable, and easy to clean. Avoid plastic-toothed grinders, which wear down quickly and can contaminate your herb. Titanium grinders are available for premium buyers who want maximum durability and zero risk of oxidation.

Can I travel with a weed grinder?

Yes — a clean grinder is just a metal or plastic device with no residue. A 2-piece grinder like the Antidote Glass 2.5" is especially travel-friendly due to its compact size. Make sure your grinder is thoroughly cleaned before travelling, particularly if crossing any borders, so there is no residual plant material inside.

How much kief can a grinder collect?

The amount of kief you collect depends on the quality of your cannabis, how fine your screen mesh is, and how often you grind. With regular daily use of a 4-piece grinder, most users accumulate a visible layer of kief after one to two weeks. Some premium grinders feature a finer screen mesh that collects kief more efficiently than cheaper models.

Are electric grinders better than manual grinders?

Electric grinders are faster and more convenient — ideal for medical users or anyone grinding large quantities regularly. Manual grinders give you more control over grind consistency and are more portable, with no batteries or charging required. For most casual to moderate users, a quality manual 4-piece grinder is all you need.