So you're already on board with the idea that your grinder is critical to making good coffee at home. But...do you maintain it? Crusty, crispy, bean-crumb-filled, coffee-oil soaked grinders can suck the joy out of your brew. A little diligence and regular care will keep things up to snuff—the first step is admitting you have a problem.
'maintenance' on Serious Eats
Once a year, you should go through your homebrewing gear and make sure everything is clean and working right. It feels good to go into a deep-cleaning mode from time to time to make sure you're not picking up off flavors from your kettle or worse—infections from equipment that should have been discarded.