The Curve | Knock Box With Oak or Iroko Knock Bar
Each KNOCDIC® knock box is made to order using high-precision 3D printing, so subtle texture and fine layer lines are normal.Colours and natural oak grain may vary slightly from piece to piece.
Why we 3D print our products →Redefine your coffee ritual with The Curve, a knock box crafted using advanced 3D printing technology and an original in-house design. Inspired by gentle arcs and sculptural forms, The Curve introduces a soft, fluid aesthetic to your coffee station while maintaining reliable everyday performance.
Its rounded contours and smooth matte finish create a calm, modern presence, complemented by a thoughtfully integrated oak/iroko knock bar for durability and precision. Designed for both daily espresso routines and relaxed coffee moments, The Curve delivers function, comfort, and contemporary design in one refined piece.
Product Dimension & Weight:
1. Rectangle - 10 x 16 x 14.5cm (Capacity: 10-12 shots) ~290g
2. Square - 16 x 16 x 14.5cm (Capacity: 20-22 shots) ~430g
Oak/Iroko Knock Bar Dimension:
1. Rectangle - Diameter 2.52cm x Length 10cm
2. Square - Diameter 2.52cm x Length 16cm
Made to order in 1–4 business days · Free UK shipping
Pairs well with
Materials & Care
Made from plant-based PLA with a real oak wood knock bar.
Hand wash only. Do not put in the dishwasher, microwave, oven, freezer, or stovetop.
Wipe clean with a damp cloth and dry after use.
Safety & Use Instructions
Use with a portafilter only. Do not strike with sharp or heavy objects.
Do not expose to high heat or leave near direct heat sources.
The Curve | Knock Box With Oak or Iroko Knock Bar
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 48 hours on weekdays.
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Shipping Information
- Ships within 1-4 business days.
- Ships in our fully recyclable wrapping and boxes. -
Customer Support
Give us a few details and we’ll offer the best solution. Connect by chat, email, and more.
We are available Monday to Friday (10am-6pm GMT)
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FAQ’s
Visit our FAQs page to find answers to common questions.
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Contact Us
We'd love to hear from you. Our team is here to help. Visit our contact page to send us a message.
Product & Color Demo
See what others have purchased
Matte Color
Scarlet Red
Lemon Yellow
Latte Brown & Orange
Charcoal
Off White (Left) & Ivory White (Right)
Dark Blue & Sakura Pink
Olive Green
Marine Blue & Yellow
Pink & Charcoal
Lilac Purple
Brown
Apple Greren
Galaxy Series
Galaxy Green
Galaxy Brown
Galaxy Purple
Galaxy Nebulae
Metallic Series
Metallic Blue
Metallic Black
Metallic Gold
Metallic Green
Marble Series
Marble White
Marble Red
Matte vs galaxy
FINDING THE PERFECT KNOCK BOX
A Knock Box that match your coffee set up
FAQs
Please read our FAQs page to find out more.
What materials are your coffee tools made from?
All our products are made using PLA, a plant-based, biodegradable plastic that is more eco-friendly than traditional petroleum-based plastics. We chose PLA not only for its sustainability but also for its strength, finish, and vibrant colour options.
Are 3D printed tools durable enough for daily use?
Yes! Our products are rigorously tested under real home barista conditions. PLA, when printed and finished correctly (as we do), offers excellent durability — ideal for espresso prep tools like knock boxes and WDTs.
Can I customise the colour or engraving?
Yes, we offer a range of colour options, and custom engraving is available on select items (like knock boxes or wdt tools). Just choose your preferences on the product page.
Do your knock boxes fit all espresso machines?
Our knock boxes generally come in two to three sizes — and if your espresso machine has a large portafilter, you may want to consider sizing up.
We recommend checking the product dimensions listed on the page and measuring your space before purchasing to ensure the perfect fit for your coffee station.
Are your knock boxes dishwasher safe?
Our knock boxes are not dishwasher safe. As they are 3D printed using PLA (a plant-based material), exposure to high heat and steam in dishwashers may cause warping or surface damage. We recommend hand-washing with mild soap and room-temperature water, then drying thoroughly.
