Abstract: The invention relates to cutting and the like tools and is particularly concerned with the cutting of an internal weld bead from within plastics pipes. It is well-known to remove an external weld bead from the junction between two plastics pipes, not only to provide a smooth external profile but also to allow the weld between the pipes to be inspected. The costs and difficulties in removing the internal beads at the welded junction has frequently resulted in the internal bead being left, and when the internal weld cannot be inspected, and turbulence created in gas or fluid being driven through the pipeline results in a higher power requirement.