DF64 Switching back and forth

#1: Post by **Jstav** » May 12th, 2023, 5:53 pm

Hi - I switched from espresso to coarse for cold brew. I nted that my espresso grind was at dial 13. When I went back to 13 and bellowed out any of the coarse grinds, my next two shots came out super fast (20ish seconds, including preinfusion). Any advice? I was under the impression I could switch back and forth. I also jave the SSP HU and the dial indicator. Thanks.

#2: Post by **jpaulm** » May 12th, 2023, 7:09 pm

I have found it may require some adjustment. Returning to the same number gets me in the ballpark but it may take a couple of shots (with fine changes) to get it exactly right.

#3: Post by **Frankie4** » May 13th, 2023, 8:23 am

Jstav wrote:Hi - I switched from espresso to coarse for cold brew. I nted that my espresso grind was at dial 13. When I went back to 13 and bellowed out any of the coarse grinds, my next two shots came out super fast (20ish seconds, including preinfusion). Any advice? I was under the impression I could switch back and forth. I also jave the SSP HU and the dial indicator. Thanks.

Try going finer when you are going back to espresso before going back to you espresso setting. So what I mean is, if you are looking to go back to 13 turn the dial to say 5 and let it run of a second or two while you bellow. Then turn the dial to 13. This should improve what is happening. Also make sure you are making these adjustments while the grinder is running.

May 13th, 2023, 9:21 pm

Thanks. Ill try that (was already turning while it was on). I'd hate to have to lose a few shots to redial in each time.

Thanks

#5: Post by **Jeff** » May 13th, 2023, 9:59 pm

It is worth looking at and considering the grind-adjustment mechanism of the DF64 (and similar grinders). Mounting the bellows on the upper burr carrier means that you're moving that carrier every time you hit the bellows. If there are any grinds that could cause the carrier to stick, that can impact grind setting, Any grinds between the collar and the upper burr carrier can also be a problem. Finally, every time you adjust grind significantly, you probably get old grind in the from the ring of grinds that tends to accumulate beneath the o-ring that "seals" the burr carrier to the grind chamber.

#6: Post by **Frankie4** » May 14th, 2023, 2:28 am

Jstav wrote:Thanks. Ill try that (was already turning while it was on). I'd hate to have to lose a few shots to redial in each time.

Thanks

Let me know how it goes. Hopefully it fixes your issue.

#7: Post by **lukeap69** » May 14th, 2023, 3:09 am

After grinding, are you checking the weight of the grounds if the same as the input? That will give you a hint of after changing the settings if the grinder retained some.