Using An Impact Driver To Drill Holes
Best Drill Impact Driver Combo
Pre-drilling is not just about wood-splitting. It fundamentally changes the nature of the joint.Take the example of screwing decking to joists. If you were to pre-drill the deck board so the hole was WIDER than the screw but the screw is allowed to bite into the joist. The joint becomes much like a nut-and-bolt where the entire joint is held in place by tension between the screw head and the tip of the screw in the joist. This tension pulls the deck board really hard and uses the screw in the way that it's strongest - it's tensile strength.When you don't pre-drill, this tension is lost and the joint is held together in a completely different way.In practice, joints will not normally fail if accomplished using either method - but the pre-drill method will make a stronger joint for a given screw size.
