Using these Toughbuilt straight cut aviation snips is a breeze. First, decide which grip suits your cutting needs. If you need more power, use the rearward grip. For precise control, go for the forward grip. When starting a cut, place the snips on the material at the desired starting point. Then, squeeze the handles using the spring - action for a smooth cut. Make sure to keep the material flat for the best results. As for the one - handed lock, it's very easy to operate. Just use your thumb or finger to engage or disengage it when you want to store the snips. When it comes to maintenance, after each use, wipe the blades clean with a dry cloth. You can also apply a little lubricant to the pivot point to keep it moving smoothly. Remember, these snips are designed for specific gauges of steel, so avoid using them on materials that are too thick or hard. If you have any issues, don't forget you're covered by a standard 2 - year warranty, and you can get a free extended warranty by registering on the manufacturer's website.