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Mini Mazzer Doserless Conversion?
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bobpaule
Senior Member
bobpaule
Joined: 31 May 2002
Posts: 167
Location: Isolation, OH
Expertise: I live coffee

Espresso: Vetrano, Venus, Enrico...
Grinder: Mazzer Mini, Rancilio Rocky...
Drip: I'd rather seize!
Roaster: Galloping G/Stir Crazy, FR8...
Posted Fri Feb 15, 2013, 3:05pm
Subject: Re: Mini Mazzer Doserless Conversion?
 

OK, I did it!

Step by step:

Removed top of doser, snapped off fingerguard,
then removed the two top bolts noting the location
of the lock washers (on each side of chute).

Removed doser assembly by reaching inside the
bottom back of doser with a long screwdriver and removing
the two screws towards the body. Bottom of doser better
left alone, a springloaded surprise looms under the cover:)

Flipped upside down, removed base, unscrewed the
old PF holder. Used two bolts to temporarily reattach the base, if
not it will pull on the wiring.

Put the backing plate over the large hole left behing the doser,
scratched the markings and drilled using a 5/64" metal
drill bit. Screwed in the tiny sheet metal screws/washers
from EspressoParts, taking care to take a turn back every
few turns or risk shaft breakage.

Took an automotive bone tool and scraped off the old gasket, then
Goo Gone-d the leftovers (it smells so good daddy, says 5yo son:)
After that rubbed with alcohol.

Took the anti-static screen and bent it carefully using the curvature
of the body wall as a template. Peeled off adhesive from new gasket
and stuck the mesh centering it over the hole, paying careful attention
for the bulk to fill up left lower corner, the stuck it onto the body over
the hole.

Mounted new chute, then snapped the fingerguard back.

Flipped it again, attached the Mini-E PF Support/holder, with a twist, I
put some Customcargrills.com neoprene rubber edge trim over the edges,
put a Velcro square over the PF contact point on the body too.

While at it got thick neoprene sheets, 3 of them, and built up a solid base
with cutouts for feet, now the entire bottom is antivibration.

The new design square grinds tray I ordered looked like xxxx, I am keeping the old one, much
more elegant and giving the entire ensemble some balance.

Gone are the klickety-klack days, the whirring is less loud, and I swear my
6PM espresso tasted better, OMFG not another white night:(

Here is the result, the skull on the EspressoParts logo had to go, per wifie:

bobpaule: Mazzer.jpg
(Click for larger image)
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gambini
Senior Member


Joined: 9 Aug 2005
Posts: 19
Location: San Diego
Expertise: I like coffee

Posted Tue Feb 19, 2013, 4:58pm
Subject: Re: Mini Mazzer Doserless Conversion?
 

So how do you like your converted Mini?  I've been contemplating this mod for a while but I haven't seen a write up for some time, so I figured people were over it due to clumping, static, etc.  

This was a well written guide to the install and I'm curious how you (and others) feel about making the switch to dosserless.  Also, how do you deal with grounds retained behind the static screen?
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Biggles
Senior Member


Joined: 4 Oct 2009
Posts: 11
Location: Brisbane
Expertise: I love coffee

Espresso: ECM Giotto
Grinder: Mini Mazzer
Posted Tue Feb 19, 2013, 5:42pm
Subject: Re: Mini Mazzer Doserless Conversion?
 

I'm very happy with my converted mazzer. With the static screen installed correctly there is no clumping or static build up.
Before the conversion I used to blind dose but there was wasted grounds, particularly when other people used my machine.
I've helped two friend convert there Mini Mazers and they love having it doserless.
The grounds retained behind the static screen are minimal.
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gambini
Senior Member


Joined: 9 Aug 2005
Posts: 19
Location: San Diego
Expertise: I like coffee

Posted Mon Feb 25, 2013, 9:48am
Subject: Re: Mini Mazzer Doserless Conversion?
 

Thanks for the reply.  Is there any problem with the fit of the funnel?  On the 1stline site it has this disclaimer for the E-ST8B funnel: "Please note that we can not confirm nor guarantee a fit of this item to any other Mazzer or other manufacturer grinder." I believe this is the same funnel as on the espressoparts site.  Please let me know if I am mistaken.

Thanks,
Tim
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