Every jigsaw I've used had an adjustment knob with an illustration that looked like back-and-forth "wobble" in the blade. What is this adjustment used for? I've always just set it as what I figured ...
Is there a rule of thumb for how often a circular saw blade should be replaced? Is visually inspecting the blade condition enough?
I'm about to buy a cordless tool set in which the tools all operate off the same form-factor battery. The batteries come in several different chemistries and I'm wondering which type is better for ...