i use dry wall screw's all the time , i would say up to 1 1/2" i use a number 5 over that i use a number 6 work's for me , i use a taper drill bit and counter sinker all in one bit, i use only fuller mfd., bit maker only, the other's are inport's and are not any good in my book , http://wlfuller.com/html/countersinks.htmlI just pulled it up on the web very cool, how much small do I go than the screw???
Yes if you want these to immediately rust and stain the wood and perhaps break as the wood moves with moisture.This is going to be outside alot, is Sheetrock screws okay for outdoors??
These may help, but I have never used one. I just use a straight bit with a diameter = the inside diameter of the screws (bottom of thread on one side to bottom of thread on the other side).What you think about the tapered drill bits, would this help from splitting?