espresso grinder DIY

Equipment, technique, or just drinking the stuff

Moderators: CakeBoy, GreenBean, Gouezeri, bruceb

espresso grinder DIY

Postby dsc » Fri Nov 27, 2009 11:52 pm

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:

[img removed]

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.
Last edited by dsc on Fri Dec 14, 2012 4:13 pm, edited 1 time in total.
"This week I are mostly...trying to build a grinder..."

Mahlkonig Guatemala for FP/drip, Elektra T1 for sale, Gaggia Classic in progress
User avatar
dsc
 
Posts: 1753
Joined: Fri Feb 02, 2007 11:43 pm
Location: UK

RE: espresso grinder DIY

Postby DrTom » Fri Nov 27, 2009 11:56 pm

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 :)
DrTom
 
Posts: 466
Joined: Wed Aug 27, 2008 12:00 am
Location: NE England

RE: espresso grinder DIY

Postby DrTom » Fri Nov 27, 2009 11:58 pm

When talking about disengaging the drive, this was what I wanted to reference

http://www.parttimeprojects.com/audio/d ... ars_01.JPG

From this webiste

http://www.parttimeprojects.com/audio/d ... ebpage.php

:)
DrTom
 
Posts: 466
Joined: Wed Aug 27, 2008 12:00 am
Location: NE England

RE: espresso grinder DIY

Postby CakeBoy » Sat Nov 28, 2009 1:30 am

I can't help you but you have your first customer when it's ready to retail :)
www.CakeBoy.co.uk
International muffin blagger

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 P/Over | Chemex | Hario Woodneck | Timer Filter
User avatar
CakeBoy
 
Posts: 9988
Joined: Tue Oct 18, 2005 10:43 pm
Location: Oxfordshire, England

Postby Skippy » Sat Nov 28, 2009 2:32 pm

Being easy to clean, inside and out is also important to me
Cimbali Junior D/1
User avatar
Skippy
 
Posts: 488
Joined: Wed Jul 11, 2007 5:54 pm

Postby espressme » Sat Nov 28, 2009 4:49 pm

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?se ... =salesrank
Cheers
-Richard
This week, mainly,I am drinking a lot of espresso
'67Cremina, Vario, DublBubbles,Vacs, Zass'es & Mokkas
User avatar
espressme
 
Posts: 162
Joined: Thu Jun 21, 2007 6:42 pm
Location: Western Wisconsin, USA

Postby Ziemas » Sat Nov 28, 2009 5:12 pm

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.
Ziemas
 
Posts: 42
Joined: Thu Sep 04, 2008 5:16 am

Postby CakeBoy » Sat Nov 28, 2009 5:16 pm

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
International muffin blagger

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 P/Over | Chemex | Hario Woodneck | Timer Filter
User avatar
CakeBoy
 
Posts: 9988
Joined: Tue Oct 18, 2005 10:43 pm
Location: Oxfordshire, England

Postby Skippy » Sat Nov 28, 2009 5:47 pm

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
User avatar
Skippy
 
Posts: 488
Joined: Wed Jul 11, 2007 5:54 pm

Postby DrTom » Sat Nov 28, 2009 5:59 pm

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!
DrTom
 
Posts: 466
Joined: Wed Aug 27, 2008 12:00 am
Location: NE England

Postby CakeBoy » Sat Nov 28, 2009 6:59 pm

I'm so stupid ...... off to grind the entire kitchen now :P
www.CakeBoy.co.uk
International muffin blagger

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 P/Over | Chemex | Hario Woodneck | Timer Filter
User avatar
CakeBoy
 
Posts: 9988
Joined: Tue Oct 18, 2005 10:43 pm
Location: Oxfordshire, England

Postby DrTom » Sat Nov 28, 2009 7:09 pm

Grind the entire kitchen!?
DrTom
 
Posts: 466
Joined: Wed Aug 27, 2008 12:00 am
Location: NE England

Postby bruceb » Sat Nov 28, 2009 7:29 pm

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.
I decided I needed a bit of a change so I roasted some Monsooned Malabar. That was a change!
Image
User avatar
bruceb
 
Posts: 5364
Joined: Sun Apr 04, 2004 12:49 pm
Location: Northern Hesse, Germany

Postby Skippy » Sat Nov 28, 2009 10:29 pm

CakeBoy wrote:I'm so stupid ...... off to grind the entire kitchen now :P


hehe
Cimbali Junior D/1
User avatar
Skippy
 
Posts: 488
Joined: Wed Jul 11, 2007 5:54 pm

Postby espressme » Sat Nov 28, 2009 11:36 pm

CakeBoy wrote:I'm so stupid ...... off to grind the entire kitchen now :P

And now you ken the advantage of a dirt floor. Already ground.:shock:
-Richard
This week, mainly,I am drinking a lot of espresso
'67Cremina, Vario, DublBubbles,Vacs, Zass'es & Mokkas
User avatar
espressme
 
Posts: 162
Joined: Thu Jun 21, 2007 6:42 pm
Location: Western Wisconsin, USA

Next

Return to Espresso

Who is online

Users browsing this forum: Google [Bot] and 15 guests

cron