Coffee Knock Box Australia | Knocking Tubes | Coffee Parts

Every espresso ends with a wet, compacted puck that needs somewhere to go. A knock box catches it in one strike, so the portafilter stays unscratched and the sink stays clear. Our coffee knock box Australia range covers compact home tubes from Dreamfarm, Crema Pro and Cafelat, stainless from Rocket Espresso, metal tubes and multifunction stations from Muvna, and the Zerohero walnut station. Want a slim coffee knock tube or a full prep station? Start with your bench.

What a parts family looks for in a knock box

We've been fitting group handles and seals since 1999, and we know the first job of a knock box is protecting the portafilter. Scraping a puck out with a spoon or knife can scratch or dent the handle. One firm knock against a rubber bar avoids that entirely.

The bar matters most. Cafelat uses a durable rubber bar soft enough to be easy on the wrists, and on the Cafelat Tubbi and Cafelat Home it lifts straight out for emptying yet stays put while you knock. Rocket Espresso's Stainless Small Knocking Tube pairs a heavy-duty rubber knock bar with a soft rubber base that protects the counter.

Stability is the second thing people overlook. Any coffee waste tube will slide if you swing a loaded portafilter at it, which is why the Crema Pro range sits on a solid rubber base. Material is the last call: hard-wearing polypropylene from Crema Pro, BPA-free, dishwasher-safe bodies from Dreamfarm, mirror-finished stainless made in Italy from Rocket Espresso, and black walnut from Zerohero. None is wrong. The right one suits how often you brew and how much bench you have, and it works best alongside the tamper and distribution tools you already use.

Start with where it lives

Measure your bench before anything else. The complaint we hear most is rarely that a box is too small; it is that it is too tall to sit under a wall cabinet. The Dreamfarm Grindenstein stands 102mm high and tucks onto the drip tray of your espresso machine when not in use. The Crema Pro comes in a 110mm home height and a 175mm version with a 155mm base and 100mm opening. If you knock hard and want a catch wall, the Muvna Metal Knock Tube with High Back puts a back panel behind the bar.

Match capacity to how much you brew

Two shots a morning suits a compact knock tube you empty daily. A household pulling more wants volume so you are not emptying it mid-session. Quick reference from our range:

Dreamfarm Grindenstein: 445ml, 110mm wide, dishwasher safe.

Dreamfarm Grindenstein Big: 825ml, 135mm wide, 125mm high.

Cafelat Tubbi and Cafelat Home: about ten double pucks, lift-out rubber bar.

Zerohero Walnut Knock Box 58mm: 1.3L, black walnut, combined prep station.

Crema Pro 175mm: the tall option, suited to home or a small cafe.

Pulling café volume all day? That belongs in our café knocking tubes range, built for service speed.

Single-purpose bin or full station?

A plain knock box does one job well. A station does several: the Muvna Large Multifunctional Coffee Station and the Muvna walnut station combine a knock chamber with portafilter seating for 51, 53 and 58mm handles, and the Zerohero Walnut Knock Box handles tamping, distributing, knocking and storage in one footprint. The Muvna Portafilter Holder and Knock Box (182 x 147 x 93mm) is the compact middle ground. If you already own a tamping station, a single-purpose tube keeps things simple.

Think about the puck, not just the box

A dialled in shot knocks out as a firm, intact disc in one strike. A puck that smears or sticks usually means the grind or dose needs adjusting, not that the box has failed. A quick pass with a WDT tool before tamping is often where the fix starts.

Cleaning and longevity

Lift-out bars make rinsing painless. Stainless and timber wipe clean; Dreamfarm's plastic bodies go in the dishwasher. Whatever you choose, empty it before the grounds compact and turn sour. Not sure which suits your setup? Send us a photo of your bench and we'll point you to the one that fits.

Coffee Parts is MHW-3Bomber's exclusive distributor in Australia, and MHW-3Bomber was the Official Gold Sponsor of the 2025 World Barista Championship in Milan. Its 1.2-litre MHW-3Bomber Square Knock Box comes from that same maker, with a curved, angled mouth designed to reduce splashing and protect your portafilter. Stock arrives in batches, so check the product page or browse the full MHW-3Bomber range.

A knock box is one corner of a clean espresso station. To finish the setup, most people add a tamping mat or base to protect the bench, a distribution tool for even puck prep, and a tamper sized to the basket. A group cleaning brush keeps the shower screen clear between shots. The Muvna multifunctional stations bundle several of these jobs into one footprint, which suits a tight bench. Starting from scratch? Build the station around how you move while you brew, then browse the wider coffee machine accessories range to fill the gaps.

People assume the knock box is the least important thing on the bench. I see it the other way round. My dad started Coffee Parts in 1999 because he couldn't find a part for his 1961 Faema E61, and that taught our family to respect the small, unglamorous pieces of kit. A knock box is exactly that kind of part. Buy one that knocks clean, sits steady and rinses easily, and you stop thinking about it. The gear should disappear so the coffee can take over.

— Pedro Lara

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