Kube 3.0 Grinder
Grinders
by Krush
Kube 3.0 Grinder: The Last Aluminium Grinder You'll Buy
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.
Pick Your Colour
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 |
Specifications for the Kube 3.0 Aluminium Grinder
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.
Why the Kube 3.0 Aluminium Grinder Is Worth the Upgrade
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.
How to Use the Kube 3.0 Grinder
The Kube 3.0 is straightforward to use, but a couple of small habits will keep it performing like new for years.
- Remove the lid by twisting it anticlockwise. Place your dried herb between the teeth in the top grinding chamber — don't overfill it. A loose, single layer grinds more evenly than a packed chamber.
- Replace the lid and twist it back and forth 8 to 12 times. You'll feel the resistance drop as the flower breaks down. The Kube's teeth do the work — you don't need to force it.
- Remove the lid and tap the grinder gently against your palm or a table to knock any material clinging to the corners down through the holes into the collection chamber below.
- Unscrew the collection chamber from the kief catcher base. Your ground herb is in the middle section, ready to use.
- Leave the kief catcher to accumulate over multiple sessions. When you've built up a visible layer on the mesh screen, use a small brush or the edge of a card to collect it.
- Clean the Kube 3.0 every few weeks by disassembling all three pieces and soaking them in isopropyl alcohol for 20 to 30 minutes. Use a soft cloth or cotton bud to wipe the threads and teeth clean, then rinse with warm water and dry completely before reassembling.
