the wipers wipe the coffee grounds down the funnel/exit chute. You don’t need bellows for the Kopi Deva. I have absolutely no retention.

As you can see in the video there are slots for the wipers and they are easy to install. As easy as tightening the screw of the burrs. wipers and burrs

So, yes, you are wrong :) Nothing annoying regarding the wipers.

    ez4prez I removed them as a test… oh lord the amount of grinds that clinged to the inner chamber was crazy.

    Talking more than 5g out of a 20g. Installed them back and went back to 0.1g of retention.

    I actually installed a third one as a test.

      10 days later

      So my deva was going around to a couple of friends… one of them has a dial gauge and wanted to do a test on it… I will leave the video for ya:

        Otaibimn For the completely non-engineering inclined folks here, can you explain what we’re seeing and why it’s impressive?

            Would it not be a better test to have the dial indicator touching the outside of the lower burr with the carriers attached?

              ez4prez It shows the tolerance on the shaft indicating if the burrs will be overall aligned.

              Newdent You are correct but the bottom carrier is being held by the shaft.

              So Shaft Alignment + That Carriers alignment = overall alignment.

              You still need to center the burr and that’s another issue.

                  What’s the run-out when grinding beans?

                    if you mean the in-out ratio, it is 17 in, 17 out for me 90% of the time.

                    The other 10% is +/- 0,1 grams.

                      mackerel That’s a sign that your scales aren’t the right resolution to test dose consistency. You really need 0.01g scales …unless you’re not “testing” of couurse, just having happy life! :-)

                      Beans weigh about 0.18g each, so you can only dose wholebean to about 0.1g, then you have the impact of the grinder on top of that.

                          MWJB

                          nah, i doubt that you taste the difference between 0.1 and 0.01 grams of coffee.

                          I am totally fine with weighing to .1 digit :)

                          Of course i am not testing. Just normal home use.

                            MWJB O-o

                            I am not gonna do that test…. it’s gonna do a mess xD

                              8 days later

                              Hola, just got my Deva yesterday - the start/stop button is stuck “on”. I reached out to Kopi Concepts and they are sending me a replacement button. It seems to be a known issue, caused during the shipping process. They said I shouldn’t use the grinder at all until the button is replaced, hard to swallow after 1 yr of waiting. Oh well, what’s another few days. Kopi has been very responsive and very helpful.

                              Had a quick question. According to the invoice, the touch point is 6.2 on the dial, and espresso default is 6.5. I read above that Kopi ensured all grinders would be “zero’ed”, so I find this a little strange, that’s it’s not zero’ed, but I guess it doesn’t make any difference, just a chance of accidental touching. Any concerns or similar experience?

                              Thanks for reading.

                              Too bad in case of the on/off button.

                              In case of the touching point i think you got that wrong.

                              Every Deva owner gets an email and it also comes on paper with the grinder where it says “to note straight away is that the alignment of each Deva is unique as it is assembled by hand. ” You then get the touching point where your individual grinders’ burrs touch. Mine is 5.9.

                              They never said the dial will start from 0, they said you will get your individual deafult setting.

                              To me it is not an issue at all. This grinder is a steal for its build quality and its grinding result. On par with the P64 i would say. Way better than the DF64.

                              I had the similar Stuck Button together with a cannot charge issue., but was resolved by sending it back. Yes the Touch point differs from machine to machine, especially if the burrs are different. I used a red marker to mark out the burr touch point on the dial.

                              So far this grinder (stock burrs) performs very welll in the cup, there is a noticeable difference in body (increased) vs my conicals and the DF64. The shots from the Kopi deva reminds me of the Bentwood, with simliar heighten texture.

                              My shots generally taste best in the 20s range with a lower pressure.

                                rytopa

                                The stock burrs are really very good. I drink medium to dark roasts and they work very well in that range.

                                  rytopa Still waiting for mine, ordered with SSP HU but sounds like the stock burrs are super! Will need to try both, was also thinking about buying original mazzers but they are probably very close to the stock burrs.