did this for my first aero cloner, took forever to get 24 holes perfect.
went to lowes and picked up a hole saw attachment for my power drill for 3.99 came with 2 sizes !
Woo HOO dont even have to draw the outlines anymore, just plug and drill till you feel you have enough holes =D
"make sure you check your hydro shop for the size of net buckets they have avail before you hit lowes, will save you a headache"