Mowing when the grass is wet or with a dull blade can cause the tip of the grass to shred, giving the lawn a brown appearance as the tips dry out, and making the grass more susceptible to disease. Cutting the grass in the intense heat can cause stress to the plant.
If you need to cut a bolt to proper length, first thread the nut on, past the cut mark. After cutting, file- off sharp edges, then back the nut off to clean up the threads. To clean up rusted or damaged threads on a bolt you want to salvage, cut a slot through the side of the right-size nut. Clamp the nut halfway into a vise with the slot down, then run the bolt into the nut. For more cleaning action, tighten up the vise on the nut.