Need help choosing a size?
Small is best for compact setups, Medium is our safest everyday option, and Large suits multiple coffees a day. Medium and Large both suit 58mm portafilters.
View Knock Box Size Guide →Find the right size
FAQs
What size knock box do I need?
It depends on how many coffees you make before emptying it. Small suits one or two a day, medium suits most homes, and large suits busy setups. For a 58mm portafilter, choose medium or large. Each product page lists how many pucks that model holds.
How many pucks does a knock box hold?
It depends on the model and size. Our boxes hold from about 2–3 pucks (Oval, small) up to about 12–14 pucks (Nordic, large). Each product page shows the exact range for that model.
What are KNOCDIC® knock boxes made from?
The body is 3D printed in PLA. The knock bar is real oak.
Are KNOCDIC® knock boxes dishwasher safe?
No. Hand wash only with warm water. Avoid the dishwasher, high heat and long soaking.
What is a knock box, and do I need one for home espresso?
A knock box is a small bin for used espresso pucks. You tap the portafilter on its bar and the puck drops in. It keeps grounds out of your sink and bin, and keeps your counter cleaner.
Will it fit my 58mm portafilter?
Yes, in medium and large. We don't recommend small for a 58mm portafilter. Each product page lists the size of the box, so you can check it fits next to your machine.
Are 3D printed layer lines normal?
Yes. Fine layer lines are part of 3D printing and don't affect how the knock box works.
Where are they made and how fast do they ship?
We 3D print every knock box to order in our UK studio and send it out within 1–3 working days. UK delivery is free. Europe and the US take about 5–10 working days, with free delivery when you spend over a set amount, and 3D printed knock boxes always ship free to the US. See Delivery and Returns for the cost in your country.
United Kingdom delivery: free on every order.
Is the knock bar removable?
Yes. The oak bar lifts out so you can wash it. Hand wash the box itself, as it isn't dishwasher safe.
About Knock Box
Coffee Knock Boxes
Designer knock boxes for cleaner home espresso setups
A coffee knock box is where your used espresso puck goes. One tap of the portafilter on the bar and the puck drops out, so no more wet grounds in the sink or bin. We 3D print every KNOCDIC® espresso knock box to order in our UK studio, from PLA, with a real oak knock bar on selected designs. Each product page shows how many pucks that model holds, or see our size guide. Free UK delivery, and we ship to Europe and the US.
How to choose your knock box size
Think about how many coffees you make before you empty it.
- Making one or two a day? A small box keeps your counter tidy.
- Most homes, a few coffees a day: a medium box is the easy pick.
- Lots of shots, or more than one coffee drinker? Go large and empty it less often.
Using a 58mm portafilter? Pick medium or large. We don't recommend small for 58mm.
Capacity changes from model to model, so check the product page. It tells you how many pucks that box holds. Still not sure? Read small vs large knock box.
Designs and colours
- Ripple: rippled sides.
- Nova: egg-shaped and sculptural, with a dimpled, textured surface.
- Minimalist: clean, simple lines for a quiet setup.
- Oval: a compact oval that fits narrow home coffee corners.
- Nordic: straight-sided and architectural, with a clean look.
- Square and Rectangular: neat lines that sit flush by your machine.
We have 27 colours: 17 Matte, 4 Metallic, 4 Galaxy and 2 Marble. Pick one to match your kitchen or your machine.
Made to order in the UK
We 3D print every knock box to order in our UK studio from PLA, and send it within 1–3 working days.
You may see fine layer lines on the surface. That's normal for a 3D printed piece.
For US orders, our 3D printed products are printed and shipped from our US studio.
We'd like to work with 3D printing partners in other countries, from small studios to people printing at home, so we can ship locally. Interested? Email knock@knocdic.com.
Delivery
- UK: free delivery.
- Europe, Switzerland and Norway: free delivery when you spend over a set amount. Arrives in about 5–10 working days.
- US: 3D printed knock boxes always ship free. Other orders ship free when you spend over a set amount. Arrives in about 5–10 working days.
- Costs for your country: see Delivery and Returns.
Oak knock bar
Selected designs come with a real oak knock bar. The bar lifts out, so you can wash it separately.
Care
Take out the oak bar, then hand wash the box with warm water and a soft cloth. Not dishwasher safe. Keep it away from high heat and don't leave it soaking.
Need a knock box and a tamping station?
Our Hub and Pod put your knock box and tamping spot in one place. Not sure which to pick? Compare the Hub, the Pod and the Modular Tray.
