54-58mm Espresso Shower Head Space Depth Gauging tool

Note: 54mm is untested I only have a 58mm machine.

This depth gauge tool works by putting it in a portafilter and mounting it into the Espresso machine like a normal porta filter basket.  Tighten to just about the same resistance as you would with a regular basket (do not worry about the position of the porta filter handle) This device might push in tighter than normal.  Then remove the porta filter from the group hand and measure the now displaced gauge piston with a caliper.  This was designed for another tool that I am making.  (Adjustable Razor, similar to Breville/Sage Razor)

Adjustable Espresso Trimmer

This design was based on the Brevile Naked Porta filter and can work on other porta filters providing it uses a spring with 3 lobes. if the springs dont fit the channel cuts remove the spring temporarily They're not needed just inconvenient to remove.

This Supports Puck Screens/Billets.

Put the puck screen in the basket (you may want to slightly push it down the gauge) and then perform a normal depth gauging operation.  The new measurements will now include your puck screen/billet

Good Practices

Write down the measured depths for different grind settings and beans.  Once you know the top clearance of your shower head you can grind to over capacity and then shave off the excess that exceeds the shower head space. Then weight the remaining grinds and use that weight value for the next batch of shots. 

Printing

This was printed with ABS on a Bambulab X1C it may be necessary to adjust the PortaFilterDepthGuage X/Y expansion for best fit. make sure the print is not loose inside the housing. Bonus if you printed the Piston a coffee brown color to simulate grinds in a basket.

Tested on

• IMS Breville Shower Screen
• Breville Standard Shower Screen