[George C]

Originally Posted by artdutra04

Wood cannot be tapped on its own, unless you are using a monstrously huge pitch. It's why wood screws have a TPI in the single digits.

That's very debatable. Wood can certainly be tapped with number, fractional or metric taps. The success and strength depends on the wood. See below.


http://www.leevalley.com/en/hardware...06,41330,40057

http://www.leevalley.com/en/wood/pag...91&cat=1,43000