Final answer:
6-point wrenches offer more torque capacity and less likelihood of stripping fasteners but may be harder to position in tight spaces. 12-point wrenches are easier to position but have a greater risk of stripping fasteners.
Step-by-step explanation:
A 6-point wrench has six sides and makes contact with all sides of the nut or bolt head, offering a secure fit and more torque capacity. It is less likely to strip the corners of the nut or bolt. However, because of its design, it may require more space to align the wrench with the fastener, which can be challenging in tight spaces. In contrast, a 12-point wrench has twice the number of points, which allows for easier positioning on the fastener since there are more angles at which it can be applied. This is handy in limited spaces where maneuverability is restricted. The downside is that with more points, there's less contact surface on the corners of the nut or bolt, which can lead to a higher chance of stripping the fastener if not applied correctly or if excessive force is used.
Mechanics will sometimes increase the torque applied by a wrench by using a length of pipe over the handle, effectively increasing the lever arm. This gives the mechanic more mechanical advantage, making it easier to loosen a very tight bolt. However, it's important to note that this practice can also be hazardous, as it could potentially break the bolt due to the increased force being applied. When there's a need for high torque and maximum grip, mechanics often turn to socket wrenches or a power drill as effective tools. They provide excellent mechanical advantage in various situations, especially when dealing with very tight or stubborn fasteners.