Traduciendo paso 2
You want to use a V bit on a CNC machine to cut it nicer and give it a chamfered edge.
I used my CNC machine with no WD40 or Water to cool it and it cut very nicely. Remember to vacuum the chunks as they come off because they can get caught and puncture the battery or do other internal damage
Its Also a very very good idea to put some paper towel in-between the clamps and the surface also be sure to have the type cover on so you don't damage the screen