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Cloth filter  for Cona D vac pot
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MadRob
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Joined: 28 Mar 2014
Posts: 2
Location: Humble
Expertise: I love coffee

Posted Fri Mar 28, 2014, 8:56am
Subject: Cloth filter  for Cona D vac pot
 

Been having the typical problems with the glass rod in my Cona pot. Has anyone retrofitted theirs with a cloth filter, and if so, could you help me with model and directions.
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calblacksmith
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calblacksmith
Joined: 25 Nov 2007
Posts: 7,672
Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
Grinder: Azkoyen Capriccio, Major
Vac Pot: 40s era Silex
Drip: Msl. Com. brewers
Roaster: gave it a try, decided no
Posted Sun Mar 30, 2014, 11:48am
Subject: Re: Cloth filter  for Cona D vac pot
 

What problems are you having? I find the glass rod to be great. Mine has a hold down spring though so if you do not then you need to be more gentle with "stirring the pot" LOL

There are problems with which ever way you go, with the cloth filters, you need to replace them regularly though it isnt a big deal, one of the common daily chores women had (it was a different era) was to cut new filters from scrap cloth and clean rags. They need to be washed and keeping them from going rancid between pots is an issue.

Keep checking Ebay for the filter body, one turns up every now and then.

 
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Wayne P.
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__________
Senior Member


Joined: 12 Sep 2006
Posts: 883
Location: .
Expertise: Just starting

Espresso: Awaiting spare parts ;o(
Grinder: None
Vac Pot: None
Drip: None
Roaster: None
Posted Sun Mar 30, 2014, 12:38pm
Subject: Re: Cloth filter  for Cona D vac pot
 

Most - if not all - French manufactured Conas had cloth filters rather than glass.  I think classicona.com may still be able to supply them as spares.  I'd guess that most of the non-Cona ones would work OK, provided the spring length is about right.  If all else fails, I have an old one somewhere which you could have, but I think they are a poor second to a properly functioning glass rod.

What are your problems with the glass rod ?  Too many grounds going down into the bottom bowl ? Drawdown not working as it should ?

Grounds in bottom bowl - you will always get some because of the type of filter, but they shouldn't be excessive, and should be very very fine. If you have large amounts of coarser grounds doing so, especially just as the brewing process starts, then a couple of things to avoid :-

If you are putting the coffee in the top bowl before the water ascends (you will be advised not to do so, but most people do it that way), you must make absolutely sure not to disturb the rod even slightly, otherwise dry grounds will get undeneath the bulb part of the filter and unseat it when the water just starts to rise allowing grounds to drop into the bottom bowl.

In all cases, be very careful how you stir it.

Slow drawdown - almost always the quality of the grind is at fault.  Too much dust clogging it up.  You don't need a state of the art grinder, but you do need a competent one that doesn't produce too many "fines". If you get that right, drawdown should start within a few seconds of taking away the heat, and progress to completion.  You don't need any of the "wet towel round the bottom bulb" etc.. procedures.

With a less than perfect grinder, you may find grinding finer helps, although I agree  it sounds counter intuitive.

You can determine if the grind quality is the problem by trying out some pre-ground packaged coffee ground for filters as a test.  It may not be good as coffee, but should at least have a consistent grind, and if the Cona works OK with that, you have isolated the problem

Above based on almost daily experience of using Cona with glass rod.

Hope this helps.
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MadRob
Senior Member


Joined: 28 Mar 2014
Posts: 2
Location: Humble
Expertise: I love coffee

Posted Sun Mar 30, 2014, 3:33pm
Subject: Re: Cloth filter  for Cona D vac pot
 

Thank you both for the feedback. I have been having both problems...grounds in the bottom pot and delayed drawdown. I have been adding the grounds prior to the water ascending. I will try doing it afterwards and see if that helps. I also suspected the quality of the grind and have ordered a good quality burr grinder to take care of that potential cause. I think between these two fixes., I should be up and running smoothly soon.

 Thanks again.
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