Ing. Buero Dieter Munkes News   •   April 10, 2018

The lack of a good espresso during my holiday travels brings up the idea to build an own machine.

A fun, non profit project between Christmas and New year.

Requirements are easy for this:

• Produce espresso
• Weight almost nothing. Size almost nothing.
• No open coffee powder handling.

Technical I need:

• >10Bar
• >80°C
• 20-40ml Water.

Solution:

As I go out for diving during my holidays, there is the option to take the middle pressure from my regulator 9.5Bar. Nearly perfect.

Hot water on diveboats is mostly available. For handling coffee i took aluminium capsules.

Sounds easy but i need 2 designs to get it done.

The Solution is 50mm diameter x 65mm tall.

Build out of titanium.

Issues:

• Main issue is to keep mechanical stength and keep your coffee hot.
• If i do a classic calculation, i gets over 100kg force on top and bottom. I need to get the tube up to 1.5mm stength….
• Take Aluminium and you get a coffee only worm, but hot fingers.

Now it works fine.