Breville Knock Box Mini Review (2026)
★★★★★4.5 (1) · by Marcus Delgado · Updated Aug 5, 2026
Tested over 3+ weeks in our lab — see our methodology
$30 typical price
Check Price on Amazon →We may earn a commission when you buy through this link, at no cost to you. Price and availability may vary.
Our Verdict
Unglamorous and essential: a weighted die-cast base, a shock-absorbing bar that takes portafilter whacks without flinching, and a removable liner that goes in the dishwasher. The Knock Box Mini turns puck disposal from a sink-splattering chore into one satisfying thunk.
Test Scores
Key Specifications
| Capacity | ~8–10 pucks |
| Base | Die-cast, non-slip weighted |
| Bar | Cushioned, removable |
| Liner | Removable, dishwasher safe |
| Size | Fits under-counter coffee stations |
| Fit | Any portafilter size |
Pros & Cons
What we love
- Weighted base stays planted under enthusiastic knocks
- Cushioned bar is quiet and portafilter-friendly
- Whole interior lifts out for dishwasher cleaning
- Compact enough for tight coffee corners
What could be better
- Mini size fills fast in multi-drink households
- Bar cushion eventually wears (replaceable)
- It's a bin; it will need washing regardless
Performance Testing
The test is simple: knock a wet puck hard, one-handed. The Mini doesn't slide, doesn't ring like a bell, doesn't chip your portafilter spouts, and the puck releases clean. Compared with the sink method (clogged drains) or the trash method (grounds dust everywhere), a knock box is the piece of workflow furniture every espresso setup quietly needs.
Cleaning & Maintenance
Empty pucks into compost or trash, rinse or dishwash the liner every few days. Spent coffee grows mold with impressive speed — the removable liner is why this one beats cheaper sealed boxes.
Who It's Best For
Every semi-automatic espresso owner currently knocking pucks into the trash can or, worse, the sink.
How It Compares
Breville Knock Box Mini vs Normcore WDT Tool
Prep and disposal — the bookends of the shot. Both under $30, both permanent fixtures.
Breville Knock Box Mini vs Fellow Atmos Canister
The full bench kit: beans stored, shots prepped, pucks knocked. Under $100 for all three.
Frequently Asked Questions
Mini or full-size?
Mini for 1–3 drinks a day; the larger box (or a drawer-style knock chute) for households pulling 5+.
Can pucks go in compost?
Enthusiastically — spent coffee is superb compost and garden material. The knock box makes collecting it trivial.
Will knocking damage my portafilter?
Not on the cushioned bar — that's the point. Knocking on hard bin edges is what chips spouts.
Guides featuring this product
Related Coffee Accessories
Timemore Black Mirror Basic 2
A proper coffee scale — 0.1g resolution, sub-second response, built-in timer — used to cost Acaia money.
Normcore V4 Spring-Loaded Tamper (58mm)
The Normcore V4 removes the two ways tamping goes wrong: calibrated springs (15/25/30lb included) click at exact pressure, and the self-leveling depth collar makes an angled tamp physically impossible.
Normcore WDT Distribution Tool
WDT — Weiss Distribution Technique — is the single highest-impact espresso technique of the decade, and this is its best-executed tool: seven 0.35mm needles on a weighted, magnetic-capped handle that rakes clumps out of your grounds before tamping.