Apparatus and method for guiding a cutting/drilling tool and capturing generated foreign material

A guide for cutting a dowel pin of a rotor assembly, the guide comprising:

• a catch basin forming a cutting tool receiver and a receptacle that is configured to accommodate and retain portions of the dowel pin during and after removal of the dowl pin from the rotor assembly;
• and
• a shim having a first edge with a cross-section that is complementary to a surface of the rotor assembly,
• wherein the first edge of the shim is configured to receive the catch basin thereon and provide support to the catch basin in an abutting position with the rotor assembly,
• wherein the cutting tool receiver is defined by a receiver edge configured to guide a rotary cutting surface of a cutting tool through a cross-section of the dowel pin, the receiver edge is a continuous edge that retains the rotary cutting surface of the cutting tool within the receptacle.

A method of cutting a dowel pin in a rotor assembly, the method comprising:

• placing a shim on a receiving surface of the rotor assembly, wherein the shim includes an edge with a cross-section that is complementary to the surface of the rotor assembly;
• placing a first catch basin portion on a first portion of the edge of the shim;
• securing the first catch basin portion to the rotor assembly using a foot of the first catch basin portion;
• inserting a cutting tool into a receiver edge of the first catch basin portion;
• placing a second catch basin portion on a second portion of the edge of the shim to form a hollow receptacle with the first catch basin portion;
• operating a rotary cutting surface of the cutting tool to pass through a cross-section of the dowel pin,
• wherein the rotary cutting surface is contained within the receptacle during operation of the cutting tool.