JeffPersson Senior Member Joined: 11 May 2008 Posts: 119 Location: Goodyear, AZ Expertise: I love coffee
Espresso: Bialetti Moka Pot Grinder: LaSanMarco SM-90A Vac Pot: Yama 8-cup Drip: VP17-2 Roaster: Behmor 1600 & Poppery I
Posted Thu Aug 7, 2008, 11:28am Subject: HELP: Getting Pretty Course Grind at finest setting
Ok, I just purchased a used La San Marco SM-90A grinder from someone locally, and while it is running fine, I cannot seem to get the grind very fine. I noticed some ground coffee build up in the threads and cleaned it out in case it was geting the top burr stuck higher than it's lowest point, but it didn't seem to help much.
The burrs seem to have nice deep grooves in them, but after looking at the design further (I'm new to burr grinders) I'm starting to think the reason the burr surface is slanted is so it can keep breaking things up finer and finer as the particles move towards the outer edges from the center of the burrs. If this is the case, the surface out by the edges seems a bit flat and I'm not sure if that is a concern. I'm referring to the circled area in the picture. Does these look like old burrs?
Posted Thu Aug 7, 2008, 12:10pm Subject: Re: HELP: Getting Pretty Course Grind at finest setting
Hi Jeff,
The area you pictured doesn't do any grinding of the beans at all, but by the look of the burr/s., they look worn & don't appear to be sharp at all. Who knows, there could be hundreds or a thousand lbs of beans through them..
JeffPersson Senior Member Joined: 11 May 2008 Posts: 119 Location: Goodyear, AZ Expertise: I love coffee
Espresso: Bialetti Moka Pot Grinder: LaSanMarco SM-90A Vac Pot: Yama 8-cup Drip: VP17-2 Roaster: Behmor 1600 & Poppery I
Posted Thu Aug 7, 2008, 1:24pm Subject: Re: HELP: Getting Pretty Course Grind at finest setting
Yes it has the 64mm burrs, and I would say it failed the fingernail test. Nail looked no different and the burr didn't even experience any friction. Looks like I need to order new ones.
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