Technology
Engineered differently.
Krush didn't set out to decorate a round grinder. It reconsidered the object: the shape, the footprint, the mass and what the material looks like when it leaves the dish.
01
Form
The square form factor. The catalogue states it plainly: Krush “reinvented the wheel by making the form factor square.”
02
Function
Medium shred is the published target for KUBE 2.0 and KUBE 3.0 — a defined preparation outcome.
03
Consistency
The point of a grinder is repeatability: the same result on the tenth pass as on the first.
04
Hand feel
175 g, 185 g and 300 g of machined body. Flat faces, defined corners, no rolling.
05
Capacity
2.5 g dish on 2.0 and 3.0; 4.20 g on the 2.0 XL.
06
Design
A shape that is protected, not borrowed — see the intellectual property position below.
See the difference.
Below is a cross-sectional model of a packed joint. It illustrates a principle every roller already knows by feel: even, open packing draws differently from uneven, compacted packing. It is a visualization of a concept — not a measurement.
Conventional round grind
Packing profile
Mixed / clumped
Modelled resistance
Higher, uneven
Draw behaviour
Channelled
Krush square grind
Packing profile
Even / open
Modelled resistance
Lower, distributed
Draw behaviour
Consistent
Illustrative airflow model. The visualisation above communicates the concept of airflow resistance and distribution in a packed joint. It is not derived from laboratory measurement, and no comparative test data is being represented. Comparative airflow testing: REQUIRES VALIDATION.
Validated data
Measured performance
This section is reserved for third-party or in-house laboratory and engineering test results — particle-size distribution, pressure-drop measurement and repeatability data. Until that testing is completed and documented, Krush makes no measured comparative performance claim.
Requires validation
Not just different-looking.
Several issued patents and intellectual property covering the design and function of its cannabis grinders, plus community designs registered in the European Union.
Alongside that: full reach compliance, batch-level testing and a proprietary track-and-trace system for transparency and quality assurance.
From billet to batch sign-off.
Nine steps, with a quality check between every one — and REACH compliance built in from raw material to finished grinder.
01
Billet selection
Every Krush starts as a solid aluminium billet — not a casting. Raw stock arrives with mill documentation and is logged against a batch number before it enters production.
QA gate
Incoming inspection: material certificates checked, stock identified and assigned a batch ID.
REACH
Supplier REACH declarations verified for the raw material before release.
02
Cut to blank
Billet is cut into square blanks sized for each format — KUBE 2.0, 2.0 XL and 3.0 — keeping the grain of the material consistent through the body.
QA gate
Blank dimensions and squareness checked before machining is released.
03
CNC machining
Multi-axis CNC mills the square body, the teeth geometry, the curved dish inset and the knurled sidewall from each blank.
QA gate
First-article inspection on every run, then in-process dimensional checks on sampled parts.
04
Deburr & surface prep
Edges are deburred and surfaces cleaned and prepared so the anodized finish bonds evenly across the corners and faces.
QA gate
Visual inspection for burrs, tool marks and surface defects before finishing.
05
Anodizing
Parts are anodized to seal the aluminium and set the colour — a hard, even finish that resists wear and does not flake into the grind.
QA gate
Colour and finish consistency checked against the approved standard for the batch.
REACH
Finishing chemistry and colourants controlled to REACH-compliant specifications.
06
Marking
Branding and private-label logos are applied by laser or UV print, with debossing and side printing available on larger runs.
QA gate
Artwork position, clarity and durability checked against the approved proof.
07
Assembly
Lid, grinding chamber and dish are assembled and the fit of each square closure is set by hand.
QA gate
Every unit checked for closure fit, rotation and alignment.
08
Batch testing
Every batch undergoes rigorous testing before it is approved for shipment.
QA gate
Batch sign-off required — units that fail are held, reworked or rejected, never shipped.
REACH
Batch compliance documentation retained for full REACH compliance.
09
Track, trace & pack
Approved units are packed and recorded in Krush's proprietary track-and-trace system, linking each batch from billet to retailer.
QA gate
Final pack audit and traceability record completed before release to freight.