Source
Coffee bars, breakfast service and kitchens
Materials indexMaterial record / Coffee grounds
Coffee bars, breakfast service and kitchens
Spent coffee grounds
Coffee grounds leave the machine warm, wet and heavy. The critical first transformation is simple: collect them cleanly and remove moisture. Once dry and graded, the grounds can become part of a repeatable composite recipe.
Why it’s worth recovering
A daily hospitality stream
Coffee is made throughout the day, giving participating sites a consistent material stream with a direct connection to guests and staff.
Character without imitation
The natural dark speckle and texture come from the grounds themselves rather than a printed finish.
Suited to controlled forming
Once dried and compounded, the material can be compounded with bio PLA then extruded into filament for 3D printing.
From waste stream to part
The production process.
- 01
Collect
Grounds are captured separately at the machine, without tea bags, food or other service waste.
Step 1 - 02
Dry
Moisture is removed promptly to stabilise the material and make storage and transport practical.
Step 2 - 03
Compound
Grounds are combined with a bio PLA recipe for the forming method.
Step 3 - 04
Extruded
The compounded pellets are then extruded through a die and wound into filament.
Step 4 - 05
3D Printing
We then use the filament to make products from our coffee waste.
Step 5
Technical data
What it is, and how it behaves.
- Incoming form
- Spent espresso grounds collected separately at source
- Critical control
- Prompt drying and stable moisture before compounding
- Preparation
- Dried, sieved and graded to suit the chosen process
- Forming routes
- Additive manufacture or moulding after recipe development
- Visual character
- Naturally dark, warm and speckled; batch variation expected
- Assembly
- Separable fittings preferred so parts can be repaired individually
Manufacturing into new things
Drying is the first manufacturing step
A useful material begins at the coffee machine. Collection routines determine whether the grounds remain viable.
Recipes follow the component
Particle size, carrier and forming method are tuned to the part instead of expecting one mixture to do everything.
Process texture is retained
Print lines and natural speckle are treated as finished character, reducing decorative layers that hide the material.
Where it doesn’t belong
- — Indoor applications unless a specific exterior system is validated.
- — Direct heat and wet-area use require separate testing.
- — Structural uses need a supporting material or application-specific certification.
Sample recipe / Coffee grounds
A product sample begins with a controlled recipe.
This record keeps the source, preparation and production decisions together, so a promising sample can be reviewed and repeated.
MadeBy material recipeSample 01 / indicative
- 01 / Feedstock
- Spent espresso grounds
- Collected cleanly at the machine
- 02 / Preparation
- Dry, sieve and grade
- Stable moisture is the first control
- 03 / Compound
- Grounds plus carrier
- Tuned to the selected forming process
- 04 / Forming route
- Print or mould
- Chosen for the component and volume
- 05 / Surface finish
- Natural dark speckle
- Process texture remains visible
- 06 / Quality checks
- Moisture, flow, fit
- Part and fittings checked independently
Illustrative sample recipe. Ground-to-carrier ratio and process settings are confirmed through component-specific trials.
From source to specification
A stream becomes useful when its limits are understood.
Material development begins before the workshop. Separation at source protects identity and quality; sampling establishes variation; testing matches the material to an application. Only then can repeatable production be discussed.
Preparation
Dried, sieved and graded to suit the chosen process
Best next job
lighting, mirrors, small furniture and interior objects
Evidence
Samples, process notes and application-specific checks are kept close to the object.
Material record
The story should survive the sale.
Each application is intended to carry a useful record: what the object is, where its material came from, how it was prepared, what care it needs and what to do when its first use ends.
- 01 / Meet the object
- 02 / Follow the material
- 03 / Read the making
- 04 / Keep it useful