Use the MFR Laser Drill (way OP in an awesome way for sure)? Always wonder what laser focus to use to get what you want? Take a look here for the answer. :
Laser Drill - Feed The Beast Wiki
Modded Minecraft Tutorial - Laser Drill by Kirby Evergreen
Laser Tools Co. - Laser Alignment Tools; Minimum Measuring Range (Feet): 0.50 ; Maximum Measuring Range (Feet): 100 ; Focus System: Center ; Beam Type: Vertical ; Beam Color: Green ; Number of Beams: 1 - 29251956 - MSC Industrial Supply