Hi. I'm building a mobile coffee station for work and this is one of the many prints I have made to put it together. This is a low drip tray that combines a scale which are readily available cheaply on Amazon. I wanted to A) make a lower drip tray so my medium Keepcup would fit under the portafilter and B) combine it with a scale so I can weigh in the dose and weigh out the espresso shot. Seems to work physically well. I used sticky rubber feet to make guides to hold everything in place in the machine because if any of the parts of the tray touch the coffee machine, you'll get an inaccurate weight reading. You could probably use blu-tak or toffee-tak to do the same thing. I'll eventually work on a V2 that will hold to the scale more accurately and look a bit more slick.