Using these Lincoln 2% Ceriated Premium Tungsten Electrodes is quite straightforward. First, choose the right electrode diameter according to the amperage of your application. For example, if your amperage is between 2 - 20 A, go for the .020' diameter. These electrodes are great for both DC and AC currents, but they perform especially well with DC. When using them, you'll notice excellent arc starts and stability. As for maintenance, since they reduce oxide build - up on the tip, you don't need to spend a lot of time grinding. However, it's still a good idea to check the tip regularly. If you see any excessive wear or damage, it might be time to replace the electrode. Also, store them in a dry place to keep them in good condition.