A dust collector is provided for use with a router that is mounted to the underside of a router table. The device serves as a means for collecting dust from both upper and lower surfaces of a cutting tool. The dust collector includes a flexible cup attachable to the underside of the router table, a vacuum hose opening on the cup connectable to a workshop vacuum hose and reducer fitting in combination are attachable to a router table fence and to one of two small openings of a “T” connector fitting on the other end, a vacuum hose attachable to the vacuum hose opening of the cup on one end and attachable to the other of two small openings of the “T” connector on the other end, a larger opening on the “T” connector connectable to a vacuum hose of a workshop vacuum, which in combination.