Rancilio Rocky Doserless Conversion


Four years ago, I decided to convert my Rancilio Rocky coffee grinder by removing the espresso doser and making a doserless chute. Rancilio makes a chute, but I didn’t like the design. I can report that I’ve been using my grinder with this chute for a few years now, and it’s excellent.

Here is my design and a short step-by-step.

First – remove the doser. You’ll have to disassemble the grinder to get to the screws from the inside.

With the doser removed, you’ll see there is a gap in the bean chute. Grounds will fall into the grinder if we don’t fix this. I ordered the plug used on the doserless model from espressoparts.com.




Inspired by a salt container, I designed this spout. The grid squares are 2 mm. The dark lines are cut lines, the light lines are fold lines.


Here’s the finished product. I made it from a piece of aluminum sheet. I think it was 23 gauge.




I drilled a couple pilot holes and screwed it on with sheet metal screws.




This chute provides easy access for cleaning and no static build-up. The Rancilio official chute is plastic and is difficult to access for cleaning.


Written by David Finster

Technical consultant and computer support. Text or call me for your tech support needs: 941-444-9771