Press the paver into place on the outdoor structure, such as the patio or walkway.
Mark the paver with the cuts necessary for a proper fit, using a pencil. The marks should extend along each side, top and bottom.
Cut the paver, using a 9-inch angle grinder and a diamond cutting disc, along the marks made in Step 2. Thick pavers will not allow the cut to penetrate all the way through. Cut as deep as possible around the entire paver.
Press a stone chisel into the groove made by the cut with the flat end facing the portion of the paver that you want to save. Hammer the chisel into the groove starting near an edge and working toward the opposite edge. The paver will fracture along the cut line.
Clean up any rough points or protrusions with the hammer and chisel or the angle-grinder.