Well I'm at it again. I've grown tired of my countertop being littered with stray grounds. Most seem to appear after a rapid thwacking and dosing of my portafilter. I liked my doserless idea but I wanted to devise some method that would allow me to continue to use my doser for its clump breaking attributes but allow me a cleaner workspace (not to mention happier wife).
I think I have it...
This modification is extremely simple and allows every ground to drop directly into my basket. The chute doesn't interfere with the normal operation of the doser handle and seems to help the grounds throwing problem (especially with rapid dosing) because the grounds go right down into the portafilter. Any portafilter will work (spouted or bottomless) and this modification does not alter the grinder in any fashion (no drilling or gluing involved).
So lets get to what we will need to perform the modification!
- One plastic container (I used one that packets of lemonade came in). Really any plastic container that is larger than the doser opening will work.
A pair of scissors or kitchen shears
Making the Chute
What we need to make is this:
What I did that cut down lengthwise then a second cut around the container to effectively remove about a 1-inch ring from the end. The container needs to be cut so that the ring can be overlapped and wound tighter so the diameter becomes smaller. This is important because its the ring's want to expand that will hold it firmly in the exit chute.
Here is the ring wound tight, inserted then allowed to expand against the chute walls:
In action (sorry for the poor lighting, I only have two hands)
Dosing my basket has become much cleaner and the counters are real proof of that. I don't notice any immediate functional problems with this setup. The coffee comes out nice and cleanly (I've even seen some minor further clump breaking) from the chute.
Although the exit chute isn't round, but the chute is I don't get any grounds out around the chute. They all seem to come straight down into the basket via the inside of the chute.
Grounds retention. Yeah it happens, since the chute is inserted up into the exit chute there is a ledge created. It does retain grounds but I haven't seen any grounds exchange (fresh grounds displacing stale grounds) into the basket. My shot quality has not changed as far as I can tell. Just be aware that if you remove the chute you'll most likely get a few grounds with it.
Static also seems to be a non-issue as the grounds are de-clumped and don't seem to retain any static after passing through the doser.
I welcome further thoughts, questions or comments!