Posted Mon Nov 28, 2011, 12:11pm Subject: Re: bottomless portafilter for Olympia cremina
samuellaw178 Said:
That's probably because stainless steel is a harder material as compared to the material(brass?) of the group. But so far there's no proof or evidence that it actually wears the group head at all. Plus, most(me) don't even tighten the pf super tight so I suspect even if there's an effect, it would only show after centuries of use. Haha. So I guess Endo is taking an extra precaution just to be on the safe side.
I thought the same thing as you. Also, the Penney is available in brass as well as stainless. By the time the grouphead wears out, I'll be 6-feet under, and I plan on living another 50 years.
vc Senior Member Joined: 27 Apr 2011 Posts: 46 Location: philadelphia Expertise: Just starting
Espresso: olympia cremina Grinder: la cimbali max junior Roaster: behmor
Posted Mon Nov 28, 2011, 12:24pm Subject: Re: bottomless portafilter for Olympia cremina
Using a bottomless portafilter, it would give you feedbacks (channeling, spritzer, or slanted flow etc) to hint whether you've done anything wrong in dosing/distribution. So from that feedbacks, you can improve/modify your workflow/technique to help develop a technique that gives you consistent and superior result.
sam,
i use a paper clip for wdt, then follow with several (6, 7, 8?) taps of the portafilter on the counter top.
is a paperclip ok? should i use some thing thinner?
less taps of the portafilter to settle the grinds?
Endo Senior Member Joined: 26 Jun 2008 Posts: 804 Location: , location, location. Expertise: I love coffee
Espresso: machine is < important than... Grinder: !
Posted Mon Nov 28, 2011, 12:31pm Subject: Re: bottomless portafilter for Olympia cremina
samuellaw178 Said:
That's probably because stainless steel is a harder material as compared to the material(brass?) of the group. But so far there's no proof or evidence that it actually wears the group head at all. Plus, most(me) don't even tighten the pf super tight so I suspect even if there's an effect, it would only show after centuries of use. Haha. So I guess Endo is taking an extra precaution just to be on the safe side.
I was talking about the tribology of chrome plated brass lugs against the brass grouphead (as orginally designed) versus stainless lugs against brass.
Due to the angles, it doesn't take much grouphead wear to cause the handle to rotate out of range. Especially when you consider these machines get used for 30+ years.
It may not be a big issue under casual use, but I figured why risk it. In any case, I bought the original PF mostly because I prefer the stock curves and chrome look.
Erm, I've never used paper clip but I do think it has to be thinner. I was using needle before this.
My technique is slightly different from you because of our equipment difference. If your grinder gives fluffy(clumpless or very little clump) grinds, then you could try my method(no need for WDT). It gives a very good dose and distribution in my experience from the bottomless pf.
What I do: Grind into a separate container, and shake the container to remove any clumps if any. Then pour the ground into the basket with a dosing funnel. Shake the basket with the funnel horizontally - to distribute the ground to an even level. Lastly, tap the basket on the counter vertically & evenly to settle the ground. Remove the funnel and tamp about 15lb. Pull the shot.
What you read about tapping that gives channeling is a different technique. The tapping that we do here is the vertical tap of the basket on the counter. Whereas the undesired tap you read is tapping the side of the basket with a tamper. The latter would create fracture in the puck and the former wouldn't from my experience
Posted Mon Nov 28, 2011, 1:21pm Subject: Re: bottomless portafilter for Olympia cremina
I normally dose 8-9g just to save on the coffee. =P For learning, I think 9-11g is on the good side. As long as you can fit the coffee into the basket and tamp, any dose will be good. Then you can adjust your dose later on based on your taste preference. But if it's below 8g, you won't be able to tamp properly because of the taper.
Seems like the obvious fix would be to get the brass option for the bottomless PF (Orphan has both), but since I don't have a Cremina I'm speaking as an interested observer and not an experienced Cremina user ;-)
Posted Mon Nov 28, 2011, 3:01pm Subject: Re: bottomless portafilter for Olympia cremina
JonR10 Said:
Seems like the obvious fix would be to get the brass option for the bottomless PF (Orphan has both), but since I don't have a Cremina I'm speaking as an interested observer and not an experienced Cremina user ;-)
Yup, it sounds good to me. But do let your taste be your final guidance and not lose yourself in the preparation techniques. What you're trying to achieve is probably to be able to pull shots after shots that are consistent(as close as possible) to each other.
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