Grinders
by Tsunami Glass
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The Metal Grinder 63mm by Tsunami Glass is a four-piece aluminium herb grinder that tears through dried botanicals with minimal effort and zero waste. At 63mm across, it sits in the sweet spot between pocket-sized and desktop — wide enough to load a decent amount, compact enough to toss in a bag. Tsunami Glass built this one with strategically angled teeth, a mesh screen, and a pollen catcher at the bottom, so everything you put in gets used. If you want to buy a metal grinder 63mm that handles daily sessions without seizing up after a month, this is where we'd point you.
This metal grinder 63mm comes in 8 finishes. They're all the same build — same teeth, same screen, same dimensions. The choice is purely aesthetic.
| Variant | SKU |
|---|---|
| Black | HS2233 |
| Blue | HS2234 |
| Silver | HS2235 |
| Green | HS2236 |
| Seven Colors | HS2237 |
| Purple | HS2238 |
| Red | HS2239 |
| Gun Metal | HS2240 |
The Seven Colors variant has a rainbow anodised finish — a bit louder than the rest. Gun Metal and Black are the most understated. All of them hold up the same way over time.
The Tsunami Glass metal grinder 63mm measures 63mm in diameter, uses four interlocking aluminium pieces, and weighs enough to stay planted on a table while you twist.
| Spec | Value |
|---|---|
| Brand | Tsunami Glass |
| Diameter | 63mm |
| Pieces | 4 (lid, grind chamber, mesh screen, pollen catcher) |
| Material | Metal (aluminium alloy) |
| Teeth design | Strategically positioned, angled |
| Pollen screen | Yes — fine mesh |
| Pollen catcher | Yes — bottom chamber |
| Colour options | 8 (Black, Blue, Silver, Green, Seven Colors, Purple, Red, Gun Metal) |
Complete your setup with a rolling tray to keep your ground herb contained, or pair this grinder with a decent set of rolling papers. If you're vaping rather than rolling, a brush tool makes cleaning the mesh screen between sessions much easier. The RAW Rolling Tray and OCB Premium Rolling Papers are popular picks among customers who order this grinder.
A quality metal grinder 63mm produces a consistent, even texture that burns or vaporises uniformly — something fingers and scissors simply cannot achieve. We've sold grinders for over 25 years at this point, and the single biggest upgrade most people can make to their smoking or vaping routine isn't a fancier pipe or a more expensive vaporiser — it's grinding their herb properly. Fingers and scissors leave you with uneven chunks. Some bits burn too fast, others barely catch. You lose trichomes to sticky fingers, and half the material ends up on the table instead of in the bowl.
A 4-piece metal grinder like this Tsunami Glass 63mm addresses all of that. The angled teeth shred herb to a consistent texture in 8-10 rotations. The mesh screen separates fine pollen from the ground material, collecting it in the bottom chamber. Over a few weeks of regular use, you'll build up a decent amount of concentrated pollen — essentially free bonus material you'd otherwise lose to your fingertips or the bottom of a bag. According to data published by the EMCDDA, trichome-rich material represents the most concentrated part of the plant, which is exactly what the pollen catcher preserves for you.
The honest limitation here: 63mm is a mid-size grinder. If you're only grinding enough for a single thin roll, a 40mm or 50mm grinder would do the job and fit in a pocket more easily. But if you grind for a session, load a vaporiser chamber, or just don't want to reload every five minutes, 63mm is the size we'd pick. It holds roughly 2-3 grams of dried herb per load. Compared to something like the SLX BFG at 88mm, it's noticeably more portable — you're not hauling around a hockey puck.
Using this metal grinder 63mm takes under a minute from loading to a finished, screen-sifted grind ready for your bowl or vaporiser.
The most common reason a metal grinder fails is seized threading caused by resin build-up — not dull teeth. The number one complaint we hear about cheap grinders confirms this: after a few months, the pieces lock together and you're standing there with a pair of pliers trying to unscrew your grinder like a stubborn jar lid. The Tsunami Glass 63mm has machined threading that holds up better than pressed-fit alternatives, but it's not immune. That quick brush after each use isn't optional advice — it's the difference between a grinder that lasts years and one that becomes a paperweight in 3 months.
Weight-wise, this metal grinder 63mm has a solid feel in the hand. It's not featherlight like an acrylic grinder, and that's a good thing — the heft keeps it stable on a table while you twist. The magnetic lid closure holds firm enough that it won't pop open in a bag, but it's not so strong that opening it becomes a two-handed operation. Small details, but they matter when you're using something daily.
The Tsunami Glass 63mm sits in a competitive middle ground between budget grinders and premium options. Compared to the Santa Cruz Shredder (a popular benchmark), the Tsunami Glass offers similar tooth geometry at a lower price point, though the Santa Cruz uses a slightly harder aluminium alloy. Against the Herb Ripper (stainless steel, made in the USA), the Tsunami Glass is lighter and less expensive, but stainless steel won't scratch or anodise over time the way aluminium can. The Black Leaf 4-Part Grinder is the closest alternative in our catalogue — similar size, similar build, but with a different tooth pattern that some users prefer for coarser grinds. If you want to get the finest possible consistency from a metal grinder 63mm, the Tsunami Glass tooth angle edges it out in our testing.
One honest note: if you already own a functioning 4-piece metal grinder in the 55-65mm range, upgrading to this Tsunami Glass model won't be a night-and-day difference. Where it shines is as a first proper grinder, a replacement for something that's seized up, or when you specifically want one of the 8 colour options Tsunami Glass offers. We've had staff members use the same one daily for over two years with no threading issues — which is more than we can say for some grinders at twice the price.
Disassemble all 4 pieces and soak them in isopropyl alcohol (90% or higher) for 20-30 minutes. Scrub the teeth and screen with a stiff brush, rinse with warm water, and let everything dry completely before reassembling. Do this every 2-4 weeks depending on use.
A 40-50mm grinder is pocket-friendly and fine for single-use amounts. The 63mm Metal Grinder handles 2-3 grams per load, which suits session grinding or vaporiser users. If you grind for more than one person or like to prep ahead, 63mm is the better call.
Metal (aluminium alloy) grinders outperform acrylic and wood on durability, consistency, and ease of cleaning. Acrylic is cheaper but the teeth dull fast and there's no pollen screen. Wood looks nice but absorbs moisture and resin. Metal is what we'd use — and what we do use.
The bottom chamber collects fine trichome particles that fall through the mesh screen during grinding. Over a few weeks of regular use, you accumulate a concentrated powder. Think of it as a bonus — material you'd otherwise lose.
Yes. The magnet on the Tsunami Glass 63mm is strong enough to stay shut during transport. It won't pop open from a bump or being tossed in a backpack. That said, it's not airtight — if smell is a concern, store it in a sealed pouch.
With regular cleaning, a well-made 63mm metal grinder lasts 3-5 years easily. The teeth don't dull the way acrylic ones do. The main failure point is seized threading from resin build-up — a quick brush after each use prevents that entirely.
Absolutely. The Tsunami Glass 63mm works on any dried botanical — lavender, damiana, mullein, whatever you're blending. The teeth don't care what you put in, as long as it's dry. Fresh or moist herbs will clog the screen and gum up the teeth.
You can order the Tsunami Glass metal grinder 63mm directly from Azarius. All 8 colour variants are available, and orders typically ship within one business day.
Last updated: April 2026
