Trisha wrote:oofnik;
One is perfect for a fine drip grind (up here, drip pots brew a delicious cup if the grind is about half again as fine as commercial drip), and the other makes a perfect grind for the MCaL, and with a firmer tamp, a very acceptable shot from the Arc!
Interesting.. I didn't know elevation was such a prominent factor!
With a bit of cleaning, checking alignment, and some CLP break-Free on the top shaft bushing, both have their assignments and work very well.
I am toying with the idea of taking one of them apart and "freshening" up the burrs with a Dremel and some patience. I'll post pics and a description of the success/failure after all is said and done, though there's no timeframe to get into it.
Hmm, unless you've got a really steady hand, I don't think I'd want to do that. It would be next to impossible to keep the gaps within a reasonable tolerance by hand. But if you're up for it, I'd love to hear how that works out.
Have you pulled the grinder apart to check the condition of the lower burr? Considering the oxidization, it might be worthwhile to pull the bottom set-screw off and drop the burr to give it a little TLC. I asume you can tighten it all the way and lock the handle up?
Yeah, I took a look at the burrs and they seem to be in reasonably good shape. Pretty sharp, too. I even unscrewed the lower burr brace and attempted to recenter it using a flashlight and some not-so-accurate methodology.. I think I made a slight improvement.
As has been said, these were probably never ever designed to grind for espresso - it's just a delight that some/many can, and do it so very well!
Trisha
I know, surprising!
So, update. I tightened it to where the burrs exerted some force on each other. I ground a dose for my Factory, felt the consistency, and was pretty surprised to find little difference compared to my SM90. Packed the grinds into the PF, tamped, and gave it a try, and was disappointed to find very little resistance. The shot pulled in about ten seconds, but it had crema! Flavor was pretty bitter and thin, though, so I don't think this is going to work out. Guess I'll just have to keep looking.
If I get some time, I might actually build my own grinder using the same sort of adjustment mechanism out of the conical burrs from my old Pavoni grinder. Not likely anytime soon, but it's a thought.




