Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
Power tools are great for removing nuts, bolts etc., but I would advise against using them for tightening fully. Some are able to strip out a thread in the blink of an eye. Use it to spin it up slowly till a slight resistance, then finish by hand or torque wrench.
Iv used my Makita impact driver on my triumph tiger exhaust manifold recently. Just gently hammer away at rusty nuts. All but one came off. Had it for years and used daily but only just thought about using on the bikes.My pet hate with them is when carpenters put door handles and hinges on and round the heads off.
Another item "Knipex Twin Grip" pliers.Site for easy look at item https://www.ebay.co.uk/itm/365484132955 I've not bought from them.For when things are broken, damaged by previous owner failed drive surface etc, these are the most tenacious type I've used.Particularly good is the "fish mouth" jaw that really grips stud etc vertically .... you know those times when ordinarily pliers slip off in awkward access situations .... usually to pinch a piece of skin on your hand somewhere in producing a blood blister These are just good when most hope is lost, I've bought the 200mm size, a great addition to toolbox.