DF54 static cling

[MarcBeck]

I have exactly the same issues and with a little clean and a good blowing out its back to normal. There was allot of coffee ground stuck to walls. I am also going to try and apply anti static clear film that they use on cars around this area and will let you all know. Other than this it a good grinder

What I have found that works is once a week I use a small round 2" long brush to clean out the chute and every time I grind (after I remove the portafilter) I give the bellows a couple of good strong pumps to clear it out. So far (2 weeks) this seems to be keeping the static issue at bay.

 

[Fish]

I had the exact same problem with the exact same grinder, also in Hawaii... It didn't have the problem at first, then it appeared and got progressively worse, especially with coarser grinds. RH where the grinder sits is 50-80%, and I'm using primarily dark roasts and espresso grinds. I was always pumping the bellows after grinding but hadn't yet cleaned it. Your solution of cleaning the grinder, then using a pipe-cleaner type brush to get the chute once or twice a week seems to have cleared it up, as well as not using the original plastic dosing cup. Thank you!

 

[Fish]

I would say newness over the cup... since plastic can't hold any electrical charge. Probably just needed a bit of coffee oil/crud buildup... LOL

Plastic/polymers absolutely can hold a static charge - otherwise "cling" film wouldn't work and you wouldn't have to ground PVC pipes in dust collection systems! The dosing cup might be polycarbonate or PET, Turin only lists it as "food-grade transparent plastic", but it definitely holds a static charge.

 

[MarcBeck]

I had the exact same problem with the exact same grinder, also in Hawaii... It didn't have the problem at first, then it appeared and got progressively worse, especially with coarser grinds. RH where the grinder sits is 50-80%, and I'm using primarily dark roasts and espresso grinds. I was always pumping the bellows after grinding but hadn't yet cleaned it. Your solution of cleaning the grinder, then using a pipe-cleaner type brush to get the chute once or twice a week seems to have cleared it up, as well as not using the original plastic dosing cup. Thank you!

I replaced the plastic dosing cup with a metal dosing cup from Amazon for $9.99 and I'm still doing the extra firm pump on the bellows but I haven't used the brush in the chute for weeks and I'm still static free. I really blame the plastic cup for the static but I'm not willing to go back to it just to test my theory (LOL). It's not broken, don't fix it.

 

[Fish]

Just tried a stainless cup, and no static with a clean grinder. There was already less static grinding directly into an Aeropress, but none at all with the SS.

 

[zupatun]

I just received a new DF54 (April 2025). It has the ionizer and I also give a little RDT spritz before I grind. Not too much of a problem with the static at this point. Most of my roasts for expresso are at the end of first crack prior to second crack (City + to City ++ as this is a blend and some will be further into the roast than other beans). I'm roasting Sweet Maria's Tens Speed Blend. Roast my pousover SO beans generally not more than City + and sometimes I tailor specifically for the origin...generally I like it a little brighter than my espresso. No issues with that either. It's a little better than the G5 grinder I've had for a couple years from a static standpoint...though RDT helps that as well. This IS using a 54mm dosing cup made of anodized aluminum.

 

[shadow745]

I just received a new DF54 (April 2025). It has the ionizer and I also give a little RDT spritz before I grind. Not too much of a problem with the static at this point. Most of my roasts for expresso are at the end of second crack prior to first crack (City + to City ++ as this is a blend and some will be further into the roast than other beans). I'm roasting Sweet Maria's Tens Speed Blend. Roast my pour-over generally not more than City + ...I like it a little brighter than my espresso. No issues with that either. It's a little better than the G5 grinder I've had for a couple years from a static standpoint...though RDT helps that as well. This IS using a 54mm dosing cup made of anodized aluminum.

Reads a bit off there... 'end of 2C prior to 1C?!? With any blend some will develop at slightly different rates due to bean size/density/moisture, but it shouldn't be that much variation unless lots of quakers in the mix and coming from Sweet Maria's that's not very likely.

 

[zupatun]

Reads a bit off there... 'end of 2C prior to 1C?!? With any blend some will develop at slightly different rates due to bean size/density/moisture, but it shouldn't be that much variation unless lots of quakers in the mix and coming from Sweet Maria's that's not very likely.

I fixed it. Ten Speed doesn't have huge variation true, but I've found some blends with significant variation. The biggest variariation I regularly see are blends that have monsooned Malabar...which can go significantly longer and higher in temps to get to first crack than some more standard Arabica or Robustas.

 

[NJCoffeeTech]

I'm not familiar with that brand, but commercial grinders I've worked on have a de chaffing spring at the outlet. The thin price of metal removes the static charge I believe by being grounded to the grinder body. I know it works because when they do break off the grinds go everywhere. Is there something similar possibly missing from yours?