Eureka Coffee Grinder Push Button Extension with Print-in-Place Hinge

This is a custom-designed push button extension for the Eureka coffee grinder (Fig.: (C)). The stock grinder's push button (Fig.: (2)) can be difficult to access—especially when using a scale to measure precise doses of coffee. To solve this, I created a print-in-place hinge extension (Fig.: (B,1)) that improves ergonomics and usability without modifying the grinder.

The extension mounts securely using an existing screw hole on the coffee grinder, making installation quick and non-invasive. The print-in-place hinge allows smooth movement and easy operation, while maintaining a minimal footprint that doesn't interfere with the scale.

Key Features:

Improved button access for better workflow and precision

Print-in-place hinge – no assembly required

No supports needed – optimized for easy printing

Installs using an existing screw hole – no drilling or permanent modifications

Printing Notes:

Designed for FDM printing

No supports needed

Print orientation: flat on the hinge side for optimal strength

This simple but effective mod greatly improves the usability of the Eureka grinder for anyone who doses directly into a portafilter or container on a scale.