The Best Coffee Knock Box Australia [2021 Guide]

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If you’re a regular espresso drinker, you’ll know just how useful the best coffee knock box Australia has can be.  Sure, you can probably get by without one, but coffee knock boxes make emptying your portafilter really quick and easy.

A knock box, a bash bin, coffee grind bin or whatever you want to call it is perfect for quickly getting used espresso grounds out of the portafilter. The used grounds are hot after extraction and so you need something reasonably durable.  Plus, you’re also banging on them quite hard, so anything too flimsy just won’t cut it.

There is a range of different type of knock boxes on the market and so like any coffee related product you buy, it pays to take some time to consider what would be the best knock box coffee option for you.

If you’re in the market for the best espresso knock box, then this guide is the perfect place to start.  This guide covers the factors you need to consider when buying a coffee knock bin and takes a closer look at some of the best coffee knockout box options currently on the Aussie market.

So let’s get into it and find you the best home espresso knock box.

The best coffee knock box Australia 2021 comparison

Below is a handy comparison table showing all the espresso grounds knock box options featured in this guide. 

The table lists the various features side by side to help you decide which is the best coffee bin for you. Click on the product name to check the price or read on for the full reviews.

ImageProductMaterialDimensionsPrice
Breville The Knock Box Accessory, Brushed Stainless Steel BCB100BSS, Grey Breville The Knock BoxSteel and plastic18 x 18 x 15.5 cmCHECK
Dreamfarm Grindenstein Coffee Knock Box, 4.3" x 4", Black, DFGR1181Dreamfarm Grindenstein Coffee Knock BoxPlastic and steel11 x 11 x 10 cmCHECK
Avanti Compact Knock Box Black, 15100Avanti Compact Knock BoxPlastic14 x 14 x 10 cmCHECK
Joe Frex JF-KCB Coffee Machine Part - Knock Box, One Size, Brown, JF-KCBJoe Frex Wooden Coffee Grind BinWood and plastic13.75 x 13.75 x 13.75 cmCHECK
New Crema Pro Knock Bin 175mm BlackCrema Pro 175mm Coffee Knock BinPlastic and steel16 x 16 x 17.5 cmCHECK
Breville BES001XL Knock Box Mini, Stainless SteelBreville Mini Espresso Knock BoxSteel and plastic10 x 10 x 11.25 cmCHECK
Sunbeam bang bang knockout binSunbeam Coffee Grind Waste BinPlastic19 x 19 x 17.5 cmCHECK
Rhino Coffee Gear RWKNOCKSS Rhino Stainless Steel Knock Box Stainless Steel Knock Tube, SilverRhino Coffee Gear Stainless Steel Knock BoxStainless steel and silicone17 x 17 x 16.5 cmCHECK
Coffee Knock Box Shock-Absorbent Durable Barista Style Espresso Knock Box with Removable Knock Bar and Non-Slip Base(Round) (Black)Makawer Espresso Knock BoxPlastic and rubber10 x 10 x 12.7 cmCHECK
Cafelat coffee knock binCafelat Tubbi Coffee Grounds BinPlastic and steel13 x 13 x 13 cmCHECK

My pick of the best coffee knock boxes: Grindenstein knock box

Don’t have the time to read the entire coffee grind knock box guide and just want to hear my recommendation?  Well, I just love the Dreamfarm Grindenstein Knock Box. It is the coffee grind bin I use at home every day.

I love the Dreamfarm Grindenstein because it’s made from durable materials such as hard BPA free plastic with a knock bar featuring a solid steel core with a rubber sleeve.  

Dreamfarm Grindenstein Coffee Knock Box, 4.3" x 4", Black, DFGR1181

The Grindenstein knock box is compact enough to sit on the drip tray of your espresso machine and is dishwasher safe for easy cleaning. There is also a non slip base to keep it securely in place.

Click here to buy the Grindenstein coffee knock box now or keep reading for my detailed coffee grind knock box reviews.

What is a coffee knock box?

Also known as a coffee grinds bin or espresso dump box, a coffee knock box allows you to quickly and easily empty used espresso pucks out of your portafilter.

Coffee knock boxes are one of the simplest and best coffee accessories to add to your home barista kit. The benefits include:

  • No more walking the portafilter across the kitchen to the bin, dripping espresso on the floor along the way
  • They prevent damage to your bin and your portafilter
  • By keeping the grinds separate you can re-use them in your compost or as an indoor plant fertiliser
  • A quicker way to make more than coffee at once, as the grinds bin is positioned right next to your machine.

What to consider when buying the best coffee grind bin

When it comes to the best knock box for espresso, there are some great options on the market. 

There are a few things to consider though, such as which style, size and material the knock box is made from. 

To purchase a coffee knockout bin that is perfect for you, consider the following factors.

Style

The most common style of coffee machine knock box is your simple bin design. 

However, there is also the option of a drawer or tube style.  Each type has its pros and cons.

  • Bin: A bin style is just a small, sturdy bin like product with a knock bar running across the top.  These are cheap, practical to use, simple to clean and easy to store – perfect for the home barista.
  • Drawer: A knock out drawer is usually installed under the coffee machine or grinder to save space.  An espresso knock box drawer is a more expensive style of knock box and generally only used in cafes or busy kitchen offices.
  • Tube: This is similar to the bin style, except as the name suggests, a coffee knock tube is a tall narrow type of bin, which is freestanding and best suited to busy cafes with a high turnover.

Size and capacity

Knockbox coffee bins come in a range of sizes to suit the amount of espresso you drink and therefore the number of used pucks you want it to hold before emptying. 

For the average household, a small bin style would be more than adequate for your used grounds, as they should be emptied every few days anyway to prevent mould growing in the bin. 

However, for a busy office kitchen or small café, you’re best to buy a coffee grounds bin with a larger capacity, so you’re not continually emptying and cleaning it each day.

In term of size, you’ll also want to consider where you’re going to store the coffee grinds bin. 

If you have plenty of space, this won’t be a major concern, but smaller kitchens with less counter space or room in the cupboards will benefit from a small sized coffee knock out box.

Grindenstein knock box black sitting on espresso machine drip tray.
Grindenstein espresso knock box sitting on drip tray

Material

Given the constant beating a knock box espresso bin gets, it’s vital that it is made with sturdy and durable material.

The most common materials used to make espresso knock boxes include stainless steel or durable plastic, often with a rubber coating on the knock bar.

Stainless steel is a durable option, but these are usually a more expensive option as well as heavier and generally not dishwasher safe.

Plastic made knock boxes are generally more affordable and easier to clean thanks to being dishwasher safe.

While plastic is not usually recommended for its durability, you can get some great quality knock boxes made from high quality plastic.  Usually, they come with a rubber coating in all the important areas to make them extra durable and withstand the regular beating. 

Often the material of the body of the coffee grounds knock box differs from the knock bar itself.  The knock bar is the part of the knock box constantly whacked with the portafilter so is the most important part of the product to consider. 

Generally, knock bars are made of stainless steel or plastic and are usually covered with high quality rubber or silicone, which provides some padding and cushioning when the bar is hit. A stainless steel knock bar is far more durable than a plastic one.

Another area to consider is the base.  Look for knock boxes with non slip bases to ensure the box stays in places as it’s hit. 

You certainly don’t want to knock over the knock box creating a huge mess with used espresso grounds everywhere.

Cleaning

An espresso machine knock box becomes quite dirty after being used, so the easier they are to clean, the better. 

The easiest ones to clean are those that are dishwasher safe.  Some knock boxes come with a removable inner, which is dishwasher safe, while the outside might just require a wipe down with a damp cloth.

A tube knock box is much harder to clean due to its long narrow shape.  The best thing to do with this type of knock box is to use a bin liner.

Closeup shot of used hot coffee grounds from espresso machine maker in espresso knock box.
large coffee knockout bin

Summary of the best espresso knock box options

So to quickly recap, listed below are the espresso dump box brands and models we review. Read on for the detailed reviews.

  • Breville The Knock Box, BCB100BSS, brushed silver
  • Dreamfarm Grindenstein Coffee Knock Box, DFR1280, black
  • Avanti Compact Knock Box, 15100, black
  • Joe Frex Knock Box, wooden
  • Crema Pro Knock Bin 175mm, black
  • Breville The Mini Knox Box, BES001BTR, black
  • Sunbeam Bang Bang Used Coffee Bin, EM0100, silver
  • Rhino SS Knock Box, RWKNOCKSS, silver
  • Makawer Coffee Knock Box, black
  • Cafelat Tubbi Knocking Tube, blue

Best knock box coffee bin reviews Australia 2021

Below we take a closer look at some of the best coffee knock boxes currently on the Australian market.

1. Breville Espresso Knock Box Review

Breville The Knock Box Accessory, Brushed Stainless Steel BCB100BSS, Grey

Key Features
Dimensions: 18 x 18 x 15.5 cm
Materials: Metal and plastic
Dishwasher safe: Yes

The Breville Espresso knock box is a super popular product among coffee lovers.  It’s one of the larger knock boxes in these reviews, perfect for households with multiple espresso drinkers.

This Breville coffee bin is made from sturdy, die cast metal and an inner bowl and knock bar made from high quality plastic. 

This inner bin is dishwasher safe which makes for easy cleaning.  On the base of the Breville coffee knock box is an anti slip rubber grip.

Pros

  • Removable dishwasher safe inner bowl
  • Sturdy metal bin

Cons

  • On the more expensive side
  • Quite a tall knocker box

For a simple and easy to use knock box, as well as being a breeze to clean, the Breville BCB100BSS knock bin is a great one to consider. It is a good choice for daily coffee drinkers with plenty of space.

>> Click here to check the price and read more reviews

2. Dreamfarm Grindenstein Knock Out Box Review

Dreamfarm Grindenstein Coffee Knock Box, 4.3" x 4", Black, DFGR1181

Key Features
Dimensions: 11 x 11 x 10 cm
Materials: ABS Plastic and rubber coated steel bar
Dishwasher safe: Yes

Arguably one of the most popular knock boxes on the market is the Dreamfarm Grindenstien DFGR1280 knock box.  I own the Grindenstein knock box and it is still going strong after many years of daily use.

At around half the size of the previous Breville knock box, the Grindenstein home knocking tube is a small bin that has been designed to sit on the drip tray of your espresso machine when not in use.  It fits around 8-10 pucks at a time.

The Grindenstein body is made from hard BPA free plastic which aids in keeping the product lightweight as well as low cost. 

The knock bar has a solid steel core and a rubber sleeve that makes this one tough little coffee bin. The rubber protects the portafilter from any damage and keeps noise to a minimum.  It also features a non slip base.

This coffee dump box espresso bin is dishwasher safe which makes it super easy to clean.  Its small height makes it really easy to store away too.

Another little bonus with the Grindenstein coffee knock box is that it comes with a booklet that provides lots of tips and suggestions on recycling your used coffee grounds as fertiliser for the garden.

For a knock box, the Grindenstein looks pretty good!  It will certainly look rather classy on your kitchen bench.  There is a larger size if this one is too small plus it comes in three colours to choose from, including red, black or silver.

Pros

  • Small and compact
  • Solid steel knocking tube
  • Dishwasher safe

Cons

  • Needs to be emptied more regularly
  • Knock bar is not removable

The Grindenstein is a great knock box for those after something of great quality without being overly expensive.  It’s the perfect size for households pulling a few espresso shots a day and will certainly serve you well for years to come.

>> Click here to check the price and read more reviews

3. Avanti Compact 15100 Coffee Bin Review

Avanti Compact Knock Box Black, 15100

Key Features
Dimensions: 14 x 14 x 10 cm
Materials: Durable plastic and rubber coated tube
Dishwasher safe: Yes (container only)

A little bit bigger than the previous Grindenstein knock box, the Avanti is another great option for home baristas not wanting an overly big espresso dump box.  It also comes at a super great price, making it the perfect solution for those just after something inexpensive.

The Avanti Compact is made from durable plastic.  The removable knock bar features a thick rubber sleeve to absorb the striking force, prevent damage to the portafilter and reduce noise. 

The knock box is also dishwasher safe and the removable knock bar makes emptying and cleaning super simple.

Another excellent design feature is the anti slip base on the bottom of the knock box.  This prevents any movement while in use. 

Like the Grindenstein, this small coffee bin is designed to sit on the drip tray of most espresso machines, which is perfect when space is a bit tight.

Pros

  • Removable knock bar
  • Dishwasher safe container
  • Small and compact

Cons

  • May be too big for some drip trays
  • All plastic construction

Considering its cheap price tag, the Avant sure does come with some great features.  Plus it comes in the choice of three colours including black, red or grey. This is a great choice for home espresso drinkers looking for an affordable coffee knock box.

>> Click here to check the price and read more reviews

4. Joe Frex JF-KCB Wooden Coffee Knock Box Review

Joe Frex JF-KCB Coffee Machine Part - Knock Box, One Size, Brown, JF-KCB

Key Features
Dimensions: 13.75 x 13.75 x 13.75 cm
Materials: Wood and PVC plastic
Dishwasher safe: No

For something a little different, the Joe Frex knock box is a cube shaped box with a removable inner bin enclosed by a great looking painted wooden box.

The cubed wooden body provides an excellent stable base for knocking out the portafilter’s espresso grounds and the rubber blocks on the base help protect your benchtops.

Inside the wooden body, you’ll find a durable PVC container that can be lifted out to dispose of the used espresso grounds easily. The knock bar is also removable. In fact, the knock bar keeps the PVC container locked inside the wooden case.

Unfortunately, neither the wooden case nor the PVC container is dishwasher safe so you’ll need to handwash them both.

Pros

  • Removable inner bin
  • Unique wooden design
  • Replacement pieces available

Cons

  • Not dishwasher safe
  • Painted and not stained wood

There’s no question about it, the Joe Frex wooden coffee knock box has a lovely classic design and will look fabulous in any kitchen.  However, it is a little on the expensive side for the home, so it won’t be the right choice for everyone.

>> Click here to check the price and read more reviews

5. Crema Pro Coffee Grind Bin Review

New Crema Pro Knock Bin 175mm Black

Key Features
Dimensions: 16 x 16 x 17.5 cm
Materials: Plastic and rubber coated steel bar
Dishwasher safe: Yes

The Crema Pro is a fabulous looking and larger style knock box, perfect if your household has several coffee drinkers.  It’s made from durable materials and is easy to clean, making it a great choice.

This knock box is made from hard wearing plastic with a solid rubber base providing a stable surface when in use.

The knock bar features a stainless steel core, with a rubber sleeve providing a durable and study place for emptying the portafilter.  The entire knock box is also easy to clean, thanks to being dishwasher safe.

Pros

  • Solid wide rubber base
  • Dishwasher safe
  • Large capacity

Cons

  • Too tall to fit on most drip trays
  • Premium price point

The Crema Pro has a really nice industrial design and look to it and will undoubtedly complement the decor of most modern day kitchens and small cafes.  It also comes with a one year warranty so you can purchase with complete peace of mind.

>> Click here to check the price and read more reviews

6. Breville Mini Espresso Knock Box Review

Breville BES001XL Knock Box Mini, Stainless Steel

Key Features
Dimensions: 10 x 10 x 11.25 cm
Materials: Steel and plastic
Dishwasher safe: No

Similar in size to the Dreamfarm Grindenstein, the BES001BTR Breville mini espresso knock box is the perfect solution for those after a knock box to sit on their espresso machine drip tray or cup warmer. It will hold around 10 pucks.

Made with durable materials, despite its tiny size, this coffee knock box Breville makes has been designed for aggressive and regular use.  The base also features an anti slip rubber grip which ensures it’s stable on the bench while being used.

For cleaning, it features a removable knock bar, which makes cleaning and disposing of used grounds easy. 

Pros

  • Removable rubber coated knock bar
  • Will fit on most machine drip trays

Cons

  • Small capacity and top opening
  • Not dishwasher safe

Breville is a well known brand with a reputation for making top quality coffee products – and their little mini knock box is no exception.  For its size, it packs a punch and will look fabulous on the drip tray of your espresso machine.

>> Click here to check the price and read more reviews

7. Sunbeam Bang Bang Coffee Grounds Bin Review

Sunbeam bang bang coffee waste bin

Key Features
Dimensions: 19 x 19 x 17.5 cm
Materials: Plastic
Dishwasher safe: No

For an inexpensive option, you can’t look past the Sunbeam Bang Bang knock box. Despite being one of the cheapest options in this guide, it comes with everything you need to quickly and easily dispose of used espresso grounds.

The Sunbeam coffee knock box features upper and lower rubber moulds, which do a fantastic job of absorbing the force from the striking action. 

This prevents damage to your portafilter while minimising any noise.  Plus, it has an anti slip rubber base, to ensure it stays securely in place on your bench when in use.

Unfortunately, this Sunbeam knock box is not dishwasher safe, so you will need to hand wash this one, but the knock bar is removable for an easier clean.

Pros

  • Shock absorbing rubber moulds
  • Inexpensive
  • Wide top opening

Cons

  • Not dishwasher safe
  • Not as sleek as others on our list

The Sunbeam Bang Bang is a traditional looking knock box with stainless steel finish and black accents.  Plus, you’ll be able to dispose of your used coffee grinds with ease, ensuring your kitchen remains clean and tidy while you sit back and enjoy your cup of coffee.

>> Click here to check the price and read more reviews

8. Rhino SS RWKNOCKSS Coffee Knock Bin Review

Rhino Coffee Gear RWKNOCKSS Rhino Stainless Steel Knock Box Stainless Steel Knock Tube, Silver

Key Features
Dimensions: 17 x 17 x 16.5 cm
Materials: Stainless steel and silicone
Dishwasher safe: Yes

If you’re after the best of the best, the Crème de la crème of knock boxes, then it’s the Rhino SS you want to consider. 

This top quality knock box is made completely from food grade stainless steel – the only product in this guide that is. 

The knock bar and top edge is padded with silicone, so you can be rest assured you won’t damage your portafilters, no matter how hard you hit it.  Plus, attached to the base is a non slip layer of silicone – so this knock box isn’t going anywhere when it’s getting a beating!

If you only ever want to buy the one knock box in your lifetime, one constructed with the best materials, then it’s a no brainer – it’s the Rhino SS knock box you’re after.  Just be warned – it does come with a hefty price tag!

Pros

  • Solid stainless steel body
  • Large capacity
  • Dishwasher safe

Cons

  • Premium price point

This is a larger knock box that makes it ideal for large espresso drinking homes or even small busy offices or small cafes.  Best of all – it’s dishwasher safe so easy to clean.

>> Click here to check the price and read more reviews

9. Makawer Coffee Knockout Box Review

Coffee Knock Box Shock-Absorbent Durable Barista Style Espresso Knock Box with Removable Knock Bar and Non-Slip Base(Round) (Black)

Key Features
Dimensions: 10 x 10 x 12.7 cm
Materials: ABS Plastic and rubber
Dishwasher safe: Yes

If the Rhino SS price tag makes your eyes water, then here’s one with a much more palatable price tag – the Makawer coffee knock box. 

This is another smaller sized knock box and the perfect option for those after a cheap alternative.

The Makawer knock box is made with high quality plastic with a non slip base.  The knock bar is made from rubber and is completely removable.  The best part is that both the box and bar are dishwasher safe, making for really easy cleaning.

The compact size is great for storing on the drip tray of most espresso machines, although it’s not that small that you’ll need to be constantly emptying it.

Pros

  • Inexpensive
  • Dishwasher safe
  • Small and compact

Cons

  • Made from plastic
  • Knock bar not fixed in position

For all its great features, it’s really hard to believe how cheap this little knock box is.  If all you are after is a good all rounder knock box that gets the job done, you can’t go past the Makawer.

>> Click here to check the price and read more reviews

10. Cafelat Tubbi Coffee Knock Tube Review

Cafelat tubbi knock box

Key Features
Dimensions: 13 x 13 x 13 cm
Materials: ABS Plastic and rubber coated steel knock tube
Dishwasher safe: Yes

Last but not least, we have the cute and colourful Cafelat Tubbi knock box.  With its bright blue bin and contrasting black bar – you can’t miss this knock box!

The Cafelat Tubbi is made with sturdy ABS plastic and features a food safe rubber coated stainless steel knock bar.  The bar is completely removable, which makes cleaning easy. 

You’ll find a non slip silicone ring at the base, which prevents the knock box from moving all over the place when in use. This one is the small size which fits around 10 used pucks, or there is a larger size for the office or small cafe which fits around 30 pucks.

Like all good knock boxes, the Cafelat knock box is also dishwasher safe.

Pros

  • Super cute and fun colour range
  • Two sizes available
  • Removable knock bar

Cons

  • Knock bar is not fixed in place, so can move a little

If you don’t only want a great quality knock box but also want to make a statement with something modern and fun looking – then you’ll seriously want to consider the Cafelat Tubbi.  They have a fun colour range including orange, yellow, black and red.

>> Click here to check the price and read more reviews

I hope you found this guide to the best coffee knock box helpful. Coffee knock boxes are an essential espresso accessory for regular coffee drinkers and make clean up so much easier.

You can find all our coffee accessory reviews here or select from one of the helpful brew articles below.

More coffee articles

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About Rachel Rodda

Founder of Coffeewise, Rachel is a passionate coffee drinker, Specialty Coffee Association member and former barista who loves to research and share practical tips on brewing great coffee at home.