A big hole drilling bit of the type utilizing a plurality of roller cutters mounted for cutting in a plane perpendicular to the axis of rotation of the bit. Regrinding of cuttings is reduced by providing baffles in association with individual roller cutters to prevent the normal pumping action of the cutters from depositing their own cuttings in front of them. Baffles may merely disrupt the pumping action of the roller cutters or they may be designed to utilize the pumping action to assist in transporting cuttings toward a pickup opening through which the transport of the cuttings to the earth''s surface is initiated.