Fill the pitcher halfway with warm water and a drop of dish soap, then blend for 30 seconds. For tough spots, use a bamboo skewer (never metal) to gently dislodge debris.

Clean the machine thoroughly, use freshly ground beans, and avoid leaving coffee sitting on the warmer for too long.

Material-based:

Wood: Brad-point or spade bits.

Metal: Cobalt or titanium-coated bits.

Masonry: Carbide-tipped bits.

Size: Match the bit to your fastener’s shank diameter.