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again this has been talked about for years. As short a drill as you need. As short a flute as you can use. Those fancy smancy drills are a waste of $$$ IMO. Those long drills with long flutes are useless, too flimsy and if you are not backing your drill out every 1/4 to a 1/2 inch you are going to have trouble.The harder the species the more the sawdust, chips, have to be cleared. The wood is not going to flow up the flutes more than an inch, if that, so those long fluted drills are useless. An aircraft drill, which features very short flute length, is perfect for all you will do and come in any length you want. I prefer 5/32 but what dia. you choose will be your preference. The larger the dia. the more stable and rigid the bit, pretty obvious. good luck and use the search too as it has been discussed many times. P.
I am talking thru drilling here
Last edited by ProfessorM; 12-24-2009 at 12:53 PM..
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