KNOCDIC Curve rectangular espresso knock box in matte charcoal grey with a smooth curved front and real oak wood bar.

Infographic chart detailing the space-saving benefits of a rectangular coffee waste bin compared to a standard round knock box.

A slim charcoal grey curved espresso knock box tucked neatly into a narrow gap on a kitchen counter coffee bar.

Using an espresso portafilter to tap a spent coffee puck into a custom pink and grey rectangular knock box.

Measurement diagram showcasing the precise width, depth, and height of the curved rectangular coffee knock box.

Close-up product breakdown graphic displaying the non-slip base, matte finish texture, and solid oak bar.

Red and yellow container on a kitchen counter next to an espresso machine.

Matte yellow and desert tan espresso knock box in a kitchen setting with coffee equipment.

Color swatches for a product with options including Ash Grey, Sakura Pink, Desert Tan, Charcoal Brown, and Scarlet Red.

Color options chart displaying 27 custom matte, metallic, galaxy, and marble colors for the KNOCDIC knock box and espresso machine accessories collection.

COFFEE KNOCK BOX

The Curve Rectangular Espresso Knock Box with Oak Bar

£39.29 GBP

Product Description

The Curve Rectangular Espresso Knock Box is a slim, sculptural coffee grounds bin designed to keep your espresso station clean, organised, and easy to use. With its narrow rectangular footprint, it fits neatly beside your espresso machine while still holding up to 10–12 used coffee pucks.

Crafted using high-precision 3D printing technology, The Curve features softly rounded contours, a smooth matte finish, and a real oak knock bar for a warm natural detail. The front-set bar gives you a comfortable knocking position, while the spacious rear drop zone leaves plenty of room for used pucks to fall cleanly into the box.

Perfect for home baristas, Sage/Breville users, and compact coffee stations, this knock box brings together everyday function, modern design, and handmade character in one refined piece.

Why you’ll love it

Slim rectangular footprint fits neatly beside your espresso machine
Holds up to 10–12 used pucks, ideal for daily home espresso routines
Real oak knock bar for a natural, premium touch
Forward-positioned bar creates a spacious rear puck drop zone
Smooth curved shape adds a soft modern look to your coffee station
3D printed with care, giving each piece subtle texture and unique character
Designed by KNOCDIC® for home baristas and coffee lovers

Product details

Dimensions: 10 × 16 × 14.5 cm
Capacity: Up to 10–12 used espresso pucks
Knock bar: Oak wood
Knock bar size: 2.52 cm diameter × 10 cm length
Material: 3D-printed plant-based PLA

Care instructions

Hand wash only with room-temperature water. Do not place in the dishwasher, microwave, near open flames, or under high heat. Designed for disposing of used coffee grounds only.

Product variants

✔ Made to order in 1–4 business days
Free UK shipping

✳︎ Important note

Eco-Friendly & Made to Order: Each KNOCDIC® knock box is 3D-printed using plant-based PLA. This creates a lightweight, durable body with a subtle, textured finish that is unique to the handmade process.

Why we 3D print our products →

Pairs well with

The Curve Rectangular Espresso Knock Box with Oak Bar

Matte Lilac Purple / Matte Scarlet Red

£39.29 GBP

Matte vs galaxy

Decorative coffee knock box with a oak knowck bar

Find the Right Knock Box for Your Setup

A textured olive green compact espresso knock box placed perfectly on a home barista coffee bar station.

Designed to Match Your Coffee Setup

Choose the size and colour that fit your machine, counter space, and daily espresso routine.

FAQs

Everything you need to know before choosing your knock box.

What materials are your coffee tools made from?

All our knock boxes are made using PLA, a plant-based material chosen for its strength, smooth finish, and vibrant colour options.

Are 3D printed tools durable enough for daily use?

Yes. Our tools are designed for daily home espresso use. To keep them in the best condition, avoid high heat, dishwashers, and prolonged soaking.

Can I customise the colour or engraving?

Yes. Many products are available in a range of colours, and custom engraving is available on selected items. For custom engraving, please leave us a message.

Do your knock boxes fit all espresso machines?

Our knock boxes come in multiple sizes to suit different setups. If you use a larger portafilter or have limited counter space, check the product dimensions before ordering.

Are your knock boxes dishwasher safe?

No. Our knock boxes are made from PLA, so dishwashers, high heat, and steam may cause warping or surface damage. Hand-wash with mild soap and room-temperature water, then dry thoroughly.