Slow Feeder Ultra

The Slow Feeder Ultra is CremaLoop’s latest battery-powered slow feeder, with a 3D-printed housing, an aluminium feeder disc, and a borosilicate glass container. Like the Metal, a rotating disc meters beans onto the burrs with intelligent motor control — stopping popcorning, lowering retention, and steadying your grind.

Read before use

Operates on a 3.7 V Li-Ion battery — do not use fast chargers above 5 V. Keep fingers away from the moving feeder disc (the aluminium disc has sharp edges). Inspect the glass container for cracks before each use and stop using it if damaged.

At a glance

Parameter	Specification
Type	Battery-powered, variable-speed electric slow feeder
Power input	USB-C, 5 VDC, 1 A
Battery	Li-Ion 3.7 V, 2000 mAh
Battery runtime	Up to ~20 hours (speed dependent)
Charging time	~3 hours
Feed rate (25 g beans)	60–120 s
Bean capacity	50 g
Auto-sleep timer	3 minutes
Operating temperature	0–40 °C
Materials	3D-printed PLA housing, aluminium (coated) feeder disc, borosilicate glass
User manual	v1.0 (issue 01.06.2026)

What’s in the box

• Slow Feeder Ultra
• Optional: Slow Feeder grinder adapter
• Optional: Single Dose Bellow & Lid

Check your adapter

Unlike the Metal, the Ultra’s grinder adapter is an optional add-on. Make sure you have the right adapter for your grinder — see Grinder compatibility.

What it does

• Stops popcorning. Beans are released onto the burrs gradually — quieter, cleaner, more consistent.
• Lowers retention. Fewer grounds left behind between doses, so single-dosing is more accurate.
• Variable speed. A 0–9 dial sets the feed rate, with an automatic anti-stall routine that clears jams on its own.

Setup

1. Charge it first — see Charging & battery.
2. Fit the adapter for your grinder — Install on your grinder · Grinder compatibility.
3. First use — fill, seat the glass, and run — First use.

Controls, use & maintenance

• Controls & LED indicator — power button, speed dial, and what the LED means
• Charging & battery
• Cleaning the feeder disc
• Cleaning the glass container

User manual

• Download User Manual v1.0 (PDF)

All manuals are also in the Manual library.

Support & warranty

Manufacturing defects are covered for 12–24 months from delivery (depending on country). For support, email cremaloop@3dfarmer.ch — photos or a short video help us diagnose. See also Troubleshooting and Contact us.

Manufacturer: 3D Farmer GmbH, Klosterstrasse 17, 8406 Winterthur, Switzerland.