Month: December 2021

The other day, I spent a few hours grinding coffee. In a previous post, I proposed a model of coffee grinding, along with some data from my morning coffee which seemed to support the model. However, it should be said that this isn’t very high quality data—there are very few data points outside the range… Continue reading Challenges with Density Measurement

For some time, I’ve assumed that the specific force you tamp with has little effect, as long as you tamp hard enough that the puck stops compressing. However, the results of a recent experiment led me to believe this might not be the case. To check this, I purchased a Normcore spring loaded tamper, then… Continue reading A Closer Look at Tamping

There are a few experiments I want to do which will require a more quantitative notion of grind size. To achieve this, I’ve done a few things which I’ll talk about in this post: Modify the adjustment knob to allow more precise selection Measure the change in burr spacing Measure outfall depth The Eureka Mignon… Continue reading Specialita Mods and Measurements

About six months ago, I picked up a cheap 0.01 g scale from Amazon. These go by a few names, but if your scale looks like this, then it’s probably the same scale: Over time, I’ve noticed something odd about the measurements I get from the scale. I usually weigh 18 g of beans for… Continue reading Scale Accuracy Issues