how do I trim or cut bricks or pavers to fit my project? building a path or walkway out of 12"X12" cement blocks. How do trim or cut the blocks, can I use a brick chisel or do I need a saw ... Report; Posted T16:01:14+0000 by Domino127 . Howdy Domino127, In most cases you can use a 3 inch masonry chisel and a hand sledgehammer as well ...