I have a drywall job that I'm struggling to do with my hand tools and circular saw and can see a real need for a Spiral Saw RotoZip type of tool. But it'm not so keen to buy something so specialized that I may not need to use again for years.
How sane would it be to press a normal router into service cutting drywall? Could I outfit it with a drywall router's plunge cutting bit and basically use it for the same thing? Or am I better off just biting the bullet and buying a spiral saw?