Yep, gotta get those coolant holes positioned down to the thousandths- - - -most people get the job done by eyeballing with a hand drill motor! "Measure it with a micrometer- - - -Mark it with chalk- - - -Cut it with an axe!"
LOL!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!