I'm thinking about investing in an electrical impact wrench. I'm restoring a very rusty vehicle and manual wrenches just won't do, even with penetrants and heat.
I've read online that electrical wrenches are bad for "precision"? Does that mean it's bad for matching torque specs?
For air wrenches, do I need a compressed air tank? Is it worth it? How much should I expect to pay?
Also how important is it to match torque specs? I've been told you should just make it as tight as you can (generally). Do impact wrenches indicate this number ever? How do you check it?
What does the community think about this one?