calblacksmith Moderator Joined: 25 Nov 2007 Posts: 7,734 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 Tue Jan 1, 2013, 9:13pm Subject: Re: Portafilter lost its shine in the dishwasher
what happened is very simple you have an aluminum porta filter and it was polished. the harsh chemicals in the dishwasher disolved all the gloss on the Polish and expose the raw aluminum which is oxidized. once you remove the oxidized metal (which will drop off your fingers) then it will be safe to use.
EDIT: Just adding that we have a Kitchen Aid stand mixer that has an aluminum beater, it wound up in the dishwasher by accident and the exact same thing happened, it went from a nice shiny polished beater to a dull grey one that had aluminum oxide rubbing off onto your fingers. A scrub with Scotchbright took off the oxidation but left a dull but clean surface that is perfectly useable. YMMV!
In real life, my name is Wayne P. Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!
Feed the newbs, starve the trolls and above all enjoy what you drink!
fwtechwiz Senior Member Joined: 19 Feb 2010 Posts: 530 Location: Fort Wayne, IN Expertise: I live coffee
Espresso: Gaggia Evolution Grinder: Hario Skerton
Posted Sun Jan 6, 2013, 5:41pm Subject: Re: Portafilter lost its shine in the dishwasher
Thanks for the reply fwtechwiz. Did your portafilter look like it was plated with some shiny substance like chrome? When the plated substance came off, did it look like a dull grey? Did some metal residue rub off onto your hands or rag when this first happened? How long did you continue to use your portafilter after it lost its shine?
The shine on the p/f is not plating, it is simply highly polished aluminum. Yes, the p/f came out dull grey, and did leave a black residue on my hands and the polishing rag. The shine never came back, but once all the black gunk was off, I continued to use it for about 6 months, until I upgraded to my Evolution. Pic is attached, taken after I drilled off the bottom and converted it to naked. BTW it was one of my best shots from the cheapo Hamilton Beach. Proof that a cheap machine and a good grinder can make great espresso!!
Symbols: = New Posts since your last visit = No New Posts since last visit = Newest post
Forum Rules: No profanity, illegal acts or personal attacks will be tolerated in these discussion boards. No commercial posting of any nature will be tolerated; only private sales by private individuals, in the "Buy and Sell" forum. No SEO style postings will be tolerated. SEO related posts will result in immediate ban from CoffeeGeek. No cross posting allowed - do not post your topic to more than one forum, nor repost a topic to the same forum. Who Can Read The Forum? Anyone can read posts in these discussion boards. Who Can Post New Topics? Any registered CoffeeGeek member can post new topics. Who Can Post Replies? Any registered CoffeeGeek member can post replies. Can Photos be posted? Anyone can post photos in their new topics or replies. Who can change or delete posts? Any CoffeeGeek member can edit their own posts. Only moderators can delete posts. Probationary Period: If you are a new signup for CoffeeGeek, you cannot promote, endorse, criticise or otherwise post an unsolicited endorsement for any company, product or service in your first five postings.