HomeRoast Digest

Topic: SMP Grinder burr question (5 msgs / 95 lines)
1) From: Kevin
Has anyone removed the center burr of the SMP?  I tried using a pair
of vice-grips and a towel to protect the burr.  I read on a website
that the burr can be removed; it's just reverse threaded so it has to
be turned clock-wise to be removed.  Is this correct?
I was very hesitant of using excessive torque so I might not have
applied enough or the burr should be left alone...
My home coffee roasting blog:http://homecoffeeroastblog.blogspot.com/Kevin

2) From: Ken Mary
If the center burr has no visible damage, leave it alone. If it is built the
same as the Bodum Antigua, the only safe way that I see to remove it is to
remove the entire shaft from the reducer. Turning the burr in place may
break some parts in the reducer. There may be a stone guard on the shaft
which may just disengage and prevent enough force to unthread. I do not know
if the replacement comes with a new shaft. If the burr is threaded onto the
shaft with an interference fit, removing it may destroy the threads. There
is also the good chance of bending the shaft.
In other words, if the center burr is worn, buy a new grinder.

3) From: Jared Andersson
Kevin the center burr is removable and you are on track.  RayO is the expert
on the list when it comes to this techinique.  Here is one of his posts from
a while back: Jared
"raymanowen" to homeroast
show details
 12/13/06 Yes, Kevin, and thanks for making this thread current- I missed it
The motor drives the center burr clockwise (to the right). The grinding
action tends to put the brakes on the center burr, or a relative
counterclockwise torque.
Clamp on the locking pliers- Vise-Grips- bump it clockwise. The burr pops
loose easily and you can spin it right off.
Same goes for the Bodum Antigua. The burrs are identical, except for a
groove and plastic or rubber seal on the lower OD of the ring burr in a
All the Solis use the same SNAFU upper burr in their grinder sets, except
for the excellent Virtuoso burrs.
Always make sure the plastic slinger is in place under the center burr when
you screw it down, and it's clean and dust free. Today's dirt is tomorrow's
Cheers -RayO, aka Opa!
On 1/10/07, Kevin  wrote:

4) From: Kevin
Thanks for the replies.  I'll be cleaning this weekend!
On 1/10/07, Jared Andersson  wrote:
My home coffee roasting blog:http://homecoffeeroastblog.blogspot.com/Kevin

5) From: Justin Marquez
Go to the Baratza site for info on removing/replacing the lower cone burr:http://www.baratza.com/solis_faq.phpSafe Journeys and Sweet Music
Justin Marquez (CYPRESS, TX)
On 1/10/07, Kevin  wrote:

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