emradguy Senior Member Joined: 31 Mar 2011 Posts: 3,639 Location: Houston Expertise: I live coffee
Espresso: Duetto II; Twist v2 Grinder: M Major, Macap M4, Pharos,... Drip: Espro presses; Aeropress Roaster: H-B "List of Favorites"
Posted Sun Feb 23, 2014, 2:20pm Subject: Re: What's under the screen?
some of what's under there might be brass, so I'd avoid using steel on it. Use a hard plastic bristle brush. If you have some Cafitza or similar, dissolve some in a bowl, and dip the brush in it as needed. Routine maintenance, such as water backflushing after every session, and removal of the screen every few days to a week, will help you prevent this from happening to you. People argue about how often to detergent back flush, but every 50 shots is the recommendation on 1st-line.com (though that may be E61 specific - I can't recall).
. Always remember the most important thing is what ends up in your cup!
Posted Sun Feb 23, 2014, 2:53pm Subject: Re: What's under the screen?
I but the bullet and took off the whole portafilter holder things, so I'm soaking it in cafiza now. You're right--it was brass, though you couldn't tell (even after it was off i had to go at it with a plastic spoon for a while to even make a scratch. Yuck.)
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