A brush (400) for delivering a glutinous substance (168) to a workpiece (170) from an end-effector (102) is disclosed. The brush (400) comprises a body (402), having a rotational axis (438). The brush (400) also comprises a shaft (404), coupled to the body (402) and coaxial with the rotational axis (438). Additionally, the brush (400) comprises a tube (430), having a first end (411) and a second end (412), opposite the first end (411). The tube (430) comprises a first channel (408), coaxial with the rotational axis (438) and having an inlet (409) and an outlet (480). Furthermore, the tube (430) extends from the body (402) in a first direction (A) along the rotational axis (438), to the second end (412). The brush (400) further comprises bristles (420) that surround a portion of the tube (430), wherein the bristles (420) extend from the body (402) in the first direction (A).