Grinders
by Krush
We'll only email you about this product — no marketing.
The Kube 3.0 by Krush is a 3-piece anodised aluminium grinder that turns dense flower into an even, consistent grind — and catches your kief separately while it's at it. At 170 grams, it's got proper heft. You pick it up and immediately feel the difference between this and the plastic thing rattling around in your drawer. The square body with contoured edges sits in your palm like it was designed around your hand, and the grinding mechanism chews through sticky, compressed buds without jamming or cross-threading. If you've been putting off upgrading your grinder, this is the one that makes the old one feel embarrassing.
The Kube 3.0 comes in three finishes — Rose Gold, Black, and Grey. All three use the same 6063 anodised aluminium, so this is purely an aesthetic choice. The Black is the most understated and hides wear the longest. The Rose Gold stands out and looks genuinely sharp — it's the one we'd grab if we wanted something that doesn't look like every other grinder on the table. The Grey sits somewhere between the two. All three pick up fingerprints equally, which is the nature of anodised aluminium. A quick wipe sorts it.
| Variant | SKU | Finish |
|---|---|---|
| Rose Gold | HS1441 | Warm metallic, eye-catching |
| Black | HS1439 | Matte dark, hides wear |
| Grey | HS1440 | Neutral, classic look |
Here's exactly what you're getting — no guesswork, no vague "premium materials" talk. The Kube 3.0 is built from 6063 anodised aluminium, the same alloy grade used in structural applications where corrosion resistance matters.
| Specification | Detail |
|---|---|
| Brand | Krush Grinders |
| Model | Kube 3.0 |
| Material | 6063 anodised aluminium |
| Construction | 3-piece (lid, grind chamber, kief catcher) |
| Kief collection | Mesh screen lining |
| Dimensions | 55 x 55 x 35 mm |
| Weight | 170 grams |
| Shape | Square with contoured edges |
| Colours available | Rose Gold, Black, Grey |
Complete your setup: pair the Kube 3.0 with a set of rolling papers and pre-rolled tips for a seamless session. If you're vaping, a fine grind from the Kube feeds perfectly into conduction vaporisers — check our vaporiser range for something to match.
We've sold hundreds of grinders over the years, and the conversation is always the same. Someone walks in, picks up the cheapest acrylic grinder on the shelf, and six weeks later they're back because the teeth have worn flat, the lid cross-threads every time, or the whole thing is glued shut with resin. Plastic grinders aren't built to last — they're built to be cheap. And cheap costs you more in the long run.
The Kube 3.0 solves every single one of those problems. The 6063 anodised aluminium doesn't degrade, doesn't absorb resin the way plastic does, and the threading stays smooth for years. The teeth are sharp enough to break down dense, sticky flower without you having to death-grip the thing. And because it's a 3-piece design with a mesh screen separating the grind chamber from the kief catcher, you're passively collecting trichomes every time you grind. After a few weeks, you've got a nice little bonus waiting for you at the bottom.
The square shape is the other thing that sets the Kube apart. Round grinders — even good ones — can slip in your hand, especially when your fingers are dry or the lid is tight. The Kube's contoured square edges give you proper grip without needing to squeeze. We've had customers with arthritis or reduced hand strength specifically tell us the shape makes a noticeable difference. At 170 grams, it's heavy enough to feel solid but not so heavy that it's a pain to carry. It fits in a jacket pocket. It travels well.
The honest limitation: because of the square shape, the corners of the grind chamber can collect material that doesn't fall through as easily as it would in a round grinder. A quick tap on a hard surface sorts it — but it's worth knowing. It's a minor trade-off for the grip and the look.
The Kube 3.0 is straightforward to use, but a couple of small habits will keep it performing like new for years.
We've had the Kube 3.0 on the shelf for a while now, and the thing that keeps surprising us is how many people come back specifically to say they like the shape. Grinders are one of those accessories where most people don't think about ergonomics — until they hold one that actually fits their hand. The square profile with the rounded edges is a small design choice that makes a real difference in daily use. It's also the grinder we'd lend to a mate without worrying about getting it back in pieces.
Compared to a standard round 4-piece aluminium grinder at a similar price, the Kube trades the extra chamber for a more compact build and a more distinctive look. If maximum kief separation is your priority and you want a dedicated scraper and multiple screens, a 4-piece round grinder might serve you better. But if you want something compact, comfortable, and built to survive being tossed in a bag every day, the Kube 3.0 is the better call. We'd pick it over any plastic or zinc alloy grinder without hesitation — and over most aluminium ones too.
It depends on what you value. The Kube 3.0's 3-piece design is more compact at 55 x 55 x 35 mm and the square shape gives better grip. A 4-piece round grinder offers a dedicated kief scraper and sometimes finer screen separation. For portability and daily comfort, we'd pick the Kube.
Disassemble all three pieces and soak them in isopropyl alcohol for 20 to 30 minutes. Wipe the teeth and threads with a soft cloth or cotton bud, rinse with warm water, and dry completely. Do this every few weeks to keep the threading smooth and the mesh screen clear.
The grinding mechanism itself works identically to a round grinder — sharp aluminium teeth shred flower evenly. The only difference is that ground material can collect slightly in the corners of the chamber. A quick tap on a hard surface clears it. No impact on grind quality.
The mesh screen sits between the grind chamber and the bottom kief catcher. It filters trichome crystals from your ground herb as they fall through, collecting them separately over time. After several sessions, you'll have a visible layer of kief to use however you like.
Not at all. At 170 grams and 55 x 55 x 35 mm, the Kube 3.0 fits comfortably in a jacket pocket or bag. The weight is actually a benefit — it gives you use when grinding and stops the grinder from feeling flimsy. It's noticeably lighter than most 4-piece metal grinders.
Anodising is an electrochemical process that converts the aluminium surface into a durable oxide layer — it's part of the metal, not a coating painted on top. It resists scratching and corrosion far better than painted or powder-coated finishes. Normal use won't wear it off.
Yes. The sharp aluminium teeth and the weight of the grinder give you enough mechanical advantage to break down dense, resinous buds without excessive force. If your flower is extremely sticky, let it dry slightly before grinding or clean the teeth more frequently to prevent build-up.
Last updated: April 2026
