Cutter Travel Calculator Calculator Form Determine the required travel for completing a hot tap. Enter the pipe’s outside diameter and wall thickness as well as the cutter’s outside diameter. The travel distance calculated is from when the cutter teeth touch the pipe until they break thr0ugh the inside of the pipe and does not account for any pilot drill. Cutter O.D. * Pipe O.D. * Pipe Wall Thickness * If you are human, leave this field blank. Compute Δ