Hello Everyone. This is my first post. I have been lurking here for many years. I love espresso and the challenge of making it. Every morning I can't wait to craft my first shot of espresso. I work for myself and have for the last 15 years right out of my house. I design and build tooling and automation. I own a complete machine shop that is in my basement, and own a seat of Solid Works 3D modeling software.

I started with espresso about 20 years ago with a Silvia and rocky grinder. After I knew I was addicted to it, about 3 years later I upgraded to a fiorenzato Bricoletta, that I plumbed in and a rebuilt Mazzer Super Jolly, and set up a little coffee bar. About 4 years after that I decided to upgrade to a S1 Vivaldi II, which I have owned for the last 13 years. I have just purchased a Kees Van Der Westin Speedster, that is slated to ship from the Netherlands on June 24th. I am 60 years old, and this is the machine I want to retire with.

I upgraded my grinder to an HG1 about 2 years ago and have not enjoyed the hand grinding like I did at first, but the results of the grind are fantastic. So, one weekend I decided to sit down at the computer with Solid Works and design a motorized add on for my HG1. One of the things that was very important to me was to have a very stout setup, but be able to return right back to the original hand grinding if I wanted to, without marking up or drilling holes in the factory parts. I have accomplished this, and it works great!! The motor I used is an oriental motor 120-volt single phase induction motor with 240 in/lbs. of torque. It spins at 62 rpm. It is this one https://catalog.orientalmotor.com/item/ ... hi62f-30ra

I am going to put up some pics of the build process for you to look at.

This is the Solid Works Model I created and built from



This is the motor mount still in the milling machine


This is the finished motor mount


This is the stock for the Clamps that hold the motor mount plate to the HG1 so no machining of the HG1 needs to be done.


These are the finished Clamps.


This is all the finished machined parts.


These are all the parts after black hardcoat


This is all I am using from the original hand grinder.


This shows the new base and motor mount.


Here's a rear view. I mounted the motor capacitor under the motor mount.


This shows the motor mounted to the grinder. I ordered a stainless-steel guard, but I used it temporarily with the switch like this.


I used a lovejoy coupling with a 15mm keyed hole in the grinder shaft end, and a 22mm keyed hole in the motor end to match the motor that I ordered at mcmaster carr


At last, the guard came in and I mounted it on the grinder.


Here it is at my little coffee bar.