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dsc
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Post subject: espresso grinder DIY
 Posted: Nov 27, 2009 - 11:52 PM
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Joined: Feb 02, 2007
Posts: 1595
Location: Leatherhead, UK / Gdansk, Poland
Status: Online!
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Hi everyone,
I'm trying to design a small conical burr grinder and would appreciate all input regarding grinding issues, what annoys you in the most popular grinders and what you would like to see in them. My list of 'wants':
- no grind retention
- quiet
- small
- easy to adjust
- doserless
so far I've got this:
The idea is to support the rotating shaft in two places and use an adjustable (up/down) carrier as the upper burr support.
Any suggestions, advice welcome.
Regards,
dsc. |
_________________
"This week I are mostly nutating..."
Mahlkonig Guatemala for FP/drip, Elektra T1 + Mazzer Major for espresso and a loving, understanding girlfriend:)
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DrTom
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Post subject: RE: espresso grinder DIY
Posted: Nov 27, 2009 - 11:56 PM
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Joined: Aug 27, 2008
Posts: 329
Location: NE UK
Status: Offline
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Hello dsc, your project looks brilliant - have you documented it elsewhere? The thing that really gets me with mine is the huge steps in adjustment - I'm thinking about making a worm drive adjustment and trying to spring load the burr adjustment or otherwise take out the play to get the exact grind.
What I'd like to see in a grinder is very fine adjustment that could possibly be 'disengaged' when wanting to change it massively (french press to turkish for example).
I'd love to see more of this project  |
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DrTom
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Post subject: RE: espresso grinder DIY
Posted: Nov 27, 2009 - 11:58 PM
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Joined: Aug 27, 2008
Posts: 329
Location: NE UK
Status: Offline
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CakeBoy
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Post subject: RE: espresso grinder DIY
Posted: Nov 28, 2009 - 01:30 AM
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Joined: Oct 18, 2005
Posts: 8487
Location: Oxfordshire, England
Status: Offline
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| I can't help you but you have your first customer when it's ready to retail |
_________________
www.CakeBoy.co.uk
"This week, I are mostly drinking flatties"
Iberital L'Anna 1 Gp Hand-Fill | Wega Orion 2 Gp | Bezzera 1 Gp | Rancilio Audrey PID | Spidem Trevi
Iberital MC2 Timed | Macap M4 DS & MXA DS | Mazzer SJ | Starbucks Barista Grinder (Dualit E60/Solis 166)
Pinhalense 2x500g Gas Batch/Sample Roaster | Gene Cafe | IMEX CR-100
Aerobie | eSantos | Zassenhaus | Bodum Pour Over | Chemex
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Skippy
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Post subject:
Posted: Nov 28, 2009 - 02:32 PM
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Joined: Jul 11, 2007
Posts: 434
Location: shropshire, uk
Status: Offline
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| Being easy to clean, inside and out is also important to me |
_________________
Cimbali Junior D/1, Compak K5.
Hario pourover filter, Kitchenaid grinder.
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Post subject:
Posted: Nov 28, 2009 - 04:49 PM
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Joined: Jun 21, 2007
Posts: 150
Location: Western Wisconsin, USA
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You might consider putting the inside thread (female} of your adjustment rod through a spur (flat)gear. Then that gear could be rotated by a pinion which could be disengaged from the driven gear to make a major change. Large gear with a large knob and small gear with a crank. Lift up the crank and then turn knob to make a major change.
Try Small Parts Inc. you will have many similar on the continent.
http://www.smallparts.com/b/16310181?searchRank=salesrank
Cheers
-Richard |
_________________
This week, mainly, I am considering the possibilities of becoming a paid curmudgeon
Conti Prestina,'67Cremina,LaPav Euro, Enrico, LaPeppina, Astra Gourmet, Mod'd Faema MPN, mod'd Mazzer SJ, Vario,Bodum Granos,Zass'es & Mokkas, Behmore , CO/SC roasters
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Ziemas
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Post subject:
Posted: Nov 28, 2009 - 05:12 PM
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Joined: Sep 04, 2008
Posts: 42
Status: Offline
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| Grind retention and static are the two issues that I dislike the most. One thing that I find very odd is that certain beans produce static while others are totally static free. Monsoon Malabar is a static monster for me. |
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CakeBoy
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Post subject:
Posted: Nov 28, 2009 - 05:16 PM
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Joined: Oct 18, 2005
Posts: 8487
Location: Oxfordshire, England
Status: Offline
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| Totally Ziemas, we hate it when the grinds come out at an angle because of the dosing system and then with the static end up everywhere as well. |
_________________
www.CakeBoy.co.uk
"This week, I are mostly drinking flatties"
Iberital L'Anna 1 Gp Hand-Fill | Wega Orion 2 Gp | Bezzera 1 Gp | Rancilio Audrey PID | Spidem Trevi
Iberital MC2 Timed | Macap M4 DS & MXA DS | Mazzer SJ | Starbucks Barista Grinder (Dualit E60/Solis 166)
Pinhalense 2x500g Gas Batch/Sample Roaster | Gene Cafe | IMEX CR-100
Aerobie | eSantos | Zassenhaus | Bodum Pour Over | Chemex
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Skippy
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Post subject:
Posted: Nov 28, 2009 - 05:47 PM
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Joined: Jul 11, 2007
Posts: 434
Location: shropshire, uk
Status: Offline
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| Ive never understood why static is so much of a problem to solve, surely you just ground the area the grinds come into contact with (the burrs perhaps?) and no more static? |
_________________
Cimbali Junior D/1, Compak K5.
Hario pourover filter, Kitchenaid grinder.
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DrTom
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Post subject:
Posted: Nov 28, 2009 - 05:59 PM
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Joined: Aug 27, 2008
Posts: 329
Location: NE UK
Status: Offline
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Skippy wrote:
Ive never understood why static is so much of a problem to solve, surely you just ground the area the grinds come into contact with (the burrs perhaps?) and no more static?
I agree - this is how I'd imagine the problem to be solved! |
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CakeBoy
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Post subject:
Posted: Nov 28, 2009 - 06:59 PM
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Joined: Oct 18, 2005
Posts: 8487
Location: Oxfordshire, England
Status: Offline
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I'm so stupid ...... off to grind the entire kitchen now  |
_________________
www.CakeBoy.co.uk
"This week, I are mostly drinking flatties"
Iberital L'Anna 1 Gp Hand-Fill | Wega Orion 2 Gp | Bezzera 1 Gp | Rancilio Audrey PID | Spidem Trevi
Iberital MC2 Timed | Macap M4 DS & MXA DS | Mazzer SJ | Starbucks Barista Grinder (Dualit E60/Solis 166)
Pinhalense 2x500g Gas Batch/Sample Roaster | Gene Cafe | IMEX CR-100
Aerobie | eSantos | Zassenhaus | Bodum Pour Over | Chemex
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DrTom
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Post subject:
Posted: Nov 28, 2009 - 07:09 PM
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Joined: Aug 27, 2008
Posts: 329
Location: NE UK
Status: Offline
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| Grind the entire kitchen!? |
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bruceb
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Post subject:
Posted: Nov 28, 2009 - 07:29 PM
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Joined: Apr 04, 2004
Posts: 3922
Location: Northern Hesse, Germany
Status: Offline
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DrTom wrote:
Grind the entire kitchen!?
You said it, mate; "surely you just ground the area the grinds come into contact with..."
Edit: added additional quote for the younguns, who might have trouble understanding. |
_________________
Three Francesconi (CMA) espresso machines - Rossi, San Marco, LaCimbali, Faema and 2 Mazzer Major grinders- CoffeeTech Maggionlino, Hottop, Alpenröst and HW Precision roasters.
This week I are sick and tired of all the snow. 
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Skippy
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Post subject:
Posted: Nov 28, 2009 - 10:29 PM
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Joined: Jul 11, 2007
Posts: 434
Location: shropshire, uk
Status: Offline
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CakeBoy wrote:
I'm so stupid ...... off to grind the entire kitchen now
hehe |
_________________
Cimbali Junior D/1, Compak K5.
Hario pourover filter, Kitchenaid grinder.
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Post subject:
Posted: Nov 28, 2009 - 11:36 PM
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Joined: Jun 21, 2007
Posts: 150
Location: Western Wisconsin, USA
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CakeBoy wrote:
I'm so stupid ...... off to grind the entire kitchen now
And now you ken the advantage of a dirt floor. Already ground.
-Richard |
_________________
This week, mainly, I am considering the possibilities of becoming a paid curmudgeon
Conti Prestina,'67Cremina,LaPav Euro, Enrico, LaPeppina, Astra Gourmet, Mod'd Faema MPN, mod'd Mazzer SJ, Vario,Bodum Granos,Zass'es & Mokkas, Behmore , CO/SC roasters
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