Before starting the saw cut process study various details of the concrete like slab thickness, slab length, and curing techniques. Once you decide the joints to be cut, it is time to mark them using chalk. If you don’t need precision to cut the joints, use a cold chisel or hand sledge. A circular diamond saw is ideal when you have to completely cut through the concrete slab. Here are some tips to follow while cutting concrete –
– Let the self-weight of the saw do the cutting. Avoid putting extra force on the equipment.
– Use a straight, smooth guide board outside the chalk line to maintain a firm two-handed grip. Slowly move the cutting saw forward against the guide board.
– Avoid twisting the blade. Keep it at the right angle to get clean cuts.
– When using a dry-cutting diamond blade, allow the blade to cool off for 30 seconds at regular intervals. This will prevent the machine from overheating.
– Always use the wet-cutting blade with water. Failing to do so might cause permanent damage to the machine.
– While dry-cutting, wear personal protective equipment (PPE) including goggles, gloves, face shield for hearing and respiratory protection, steel-toed boots, and full-sleeved shirts. Knee pads and shin protectors will further provide more protection.
– Joints are cut as deep as one-quarter to one-third the slab thickness. For instance, in a 6-inch slab, the cut should be 1.5 to 2 inches deep.
– When using a dry saw, use appropriate dust extractors.
– While operating an electric blade saw, use a GFCI-protected extension cord to prevent shocks and overloads.
– Use a duct tape along the bottom of the saw machine where it cuts the concrete. This will prevent the equipment from getting scratches and blotches.
– While using a handheld saw, make shallow cuts as demarcation lines instead of deeper cuts. Once the shallow cuts are made, increase the blade depth by ½ inch increments. This allows a uniform movement and clean edges.