Time to alter some metal. Working on the <b>inside of the line </b>running the tool at max (or high) speed start making your line. The object here is to start making a groove. If you try to cut the metal through on the first pass, you will go through about 57 cutting disks unless you break some too, then the number could be higher. If you think of what you are doing as sanding in a precise spot you will achieve success. You are letting the speed of the tool do the work, not the sharpness of the disk. Let your ears and eyes be your guide and if you hear the tool slow down in pitch or observe the tool starting to oscillate, back off.
What we\'re looking at after one lap around the circle. Take your time and use the force. The second pic is another look of lap #1 from the top to get an idea of the depth of the groove...
Lap #2 and getting a little deeper. Probably more than half way through the material. Aluminum is a relatively easy material to work with. Where this technique pays off is when you are working with more stubborn materials like steel. The second pic is a closer look at the groove from above
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