Search found 49 matches
- November 25th, 2012, 6:49 pm
- Forum: Tips and Techniques
- Replies: 25
- Views: 6134
Chronic ring/side/donut channeling solved.
I think that any change in the diameter of the basket is more dependent on the portafilter temperature than the basket temperature. When the portafilter is locked in place the concave basket lip is very tightly coupled to the portafilter rim. Since the portafilter wall is much thicker than the baske...
- November 7th, 2011, 10:12 am
- Forum: Espresso Machines
- Replies: 27
- Views: 1313
Multiple PIDs for More Temperature Stability
Port townsend is a few miles NW of the City of Milk and Coffee
- November 6th, 2011, 7:04 pm
- Forum: Espresso Machines
- Replies: 27
- Views: 1313
Multiple PIDs for More Temperature Stability
I was asked this same question in a previous post on CG regarding the non-PID incantation of this machine. There is no flux capacitor, however it has an electrodynamic molecular compressor, free electron phonon generator, supercritical entropy amplifier, and confabulation augmentation. The three PID...
- November 6th, 2011, 11:48 am
- Forum: Espresso Machines
- Replies: 27
- Views: 1313
Multiple PIDs for More Temperature Stability
Here is my machine with PIDs for control of boiler temperature, group temperature, and shot temperature. I know this is a little excessive but at least I don't have to flush the group before a shot. {image}
- October 31st, 2011, 10:42 pm
- Forum: Tips and Techniques
- Replies: 38
- Views: 14306
What is a cortado?
I found that the Metropolis Coffee training videos provide a good distinction of the macchiato vs. the cortado ({link}). The cortado is my favorite drink prepared at home but espresso establishments usually don't know what it is so I order a macchiato, which most times turns out to be a cortado. It ...
- August 2nd, 2011, 12:36 am
- Forum: Espresso Machines
- Replies: 27
- Views: 2173
Question on HX temperature profile
I have added a few PID controllers and a timer in an attempt to stabilize my old HX machine. There is a PID to regulate the boiler temperature (top left in photo), a PID to regulate the group temperature (bottom left), and a PID that just measures the brew water temperature at the shower screen (rig...
- April 27th, 2011, 6:38 pm
- Forum: Grinders
- Replies: 8
- Views: 9587
Installing Mazzer Super Jolly burrs in a standard issue Mini
I am very pleased with the performance of the modified mini. It is solid, fast, and consistent yet an appropriate size for home use. I run a little less than a pound of beans per week and have found that the grind just needs to be adjusted when I change coffee and is remarkably consistent through th...
- March 19th, 2011, 12:18 pm
- Forum: Espresso Machines
- Replies: 11
- Views: 2270
Silicone o-rings
I have purchased silicone o-rings on eBay, which has a huge variety of sizes from various sellers. Here's an example: {link}
- January 26th, 2011, 4:41 pm
- Forum: Grinders
- Replies: 8
- Views: 9587
Installing Mazzer Super Jolly burrs in a standard issue Mini
There have been a number of posts here and at CG regarding using Super Jolly burrs in a Mazzer Mini ({link} and "Grind quality of Mazzer Mini E vs. Super Jolly?"). It appears that the Mini motor has enough power to drive the larger SJ burr set for low duty cycle home use, so I decided to do a
- January 12th, 2011, 3:42 pm
- Forum: Espresso Machines
- Replies: 9
- Views: 4949
Adding preinfusion to a rotary pump machine
A stepper motor with sufficient torque should be fine for pressure profiling. You may not even need a pressure transducer for feedback if you provide a way to move the motor to a home position on power up. By the way, on my other espresso machine I just put a knob on the pump pressure adjustment scr...