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I have about 200 roasts on my M3s, and while I clean about every 40-50 roasts, I am beginning to hear a bit of noise from the center shaft on the drum. I read (quite some time ago) that lubrication can/should be used on the front shaft spindle area occasionally.

Could someone...

Since hunting down exceptional greens can be a challenge nowadays maybe heads up are in order.
here are a few recent listed lots I just ordered that should have exceptional potential for espresso and/or brewed.
SM Kenya Nyeri Ngunguru
SM Aida Batlle El Salvador Finca...

Discussion is spread across several threads for this coffee, figured I'd start one explicitly discussing profiles and roasting techniques.

This coffee seems to absorb heat like no other. Really easy to roast thus far. My best profiles have been Rao curves and a linear profile...

My fellow roasters,

I've recently started taking my first steps into going business-side with my coffee obsessions. I catered a wedding for my cousin, which turned into selling a few pounds of home-roasted coffee, which led to me making some connections with local churches to...

I've noticed that my home roasted beans tend to create more channeling espresso shots than ones from a professional roaster. I'm usually roasting South American coffees from Sweet Maria's that are denoted good for espresso . I look for ones that recommend full city / full city +...

Background: Mentioned In a few places in the Coffeelands blog and here a few years ago when I did a distro of one of the 50# boxes I buy. The coffee is sourced through a project centered around a parish church in San Lucas where Father Gregory Schaffer served for 40 years. The...

MCR roasters recommends low to DE, medium until FC and then high in their starter manual.

I thought that was too many changes so I found my max convection setting and backed off that a small amount and left it until 45 seconds after FC where I up to where I think it will blow...

Relatively new here, so I apologize if this has been asked/answered before.

I'm curious what protocol people follow when doing a teardown clean of their Quest M3s. I regularly clean the machine from areas I can reach without disassembly, and, not being very mechanically...