I need to recreate these air vents in a 3/4" piece of plywood, the hole is 3/8" wide and slightly rounded at the ends. What bit do i need, i was thinking a round nose bit but i dont think it will plunge deep enough to go all the way through the 3/4" wood.
Chris, I would suggest a 3/8" spiral up cut bit. You can save a good amount of money by using a high speed steel bit for this. It should run you around $12. Remember to make your cut in a couple passes, perhaps a 1/4" at a time.
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