Tools that have rusted can be cleaned with a piece of steel wool without ruining the finish. A product called Liquid Wrench can also be used to clean rusted tools.
I find a wire brush is usually enough to clean threads.
Hit it with a hammer
Use pipe die on worn threads if you have enough room for die to fit. If not, clean threads with wire brush.
You can try soaking it in Vinegar.
Put in Hot water
A cutting torch is one answer.
Most of the time it breaks off and you will need to drill it out and replace screew.
Most rust can be removed by a steel brush if its not to rusted
NO you cannot heat as any flame can cause a severe explosion and the very least crack the CI fitting The threads have to be cut out gently and possibly re tapped
Bad news. I have found it impossible to remove the bolt caps without breaking them. They are mortared on. They do make plastic bolt caps in a lot of different colors.
a large hammer
Rusting bolts normally indicates that the bolts are brittle. Taking a pair of water pump pliers and squeezing really hard will most of the time break the rusted bolt so you can remove the toilet seat. Otherwise depending on the type of toilet seat installed, you can drill a hole right through exactly where the rusted bolts slot in, so helping you remove the toilet seat.
You can try spraying the rusted parts with a penetrating oil like wd40 or a product designed to loosen rusted on bolts. Let it soak for a bit before trying to remove. In my experience a big hammer is big help.
Lug nuts are still on, wheel is rusted to the hub.
Your going to need to get a special puller if its rusted on, usually if its new or not rusty you can just remove the bolt and hit it with a hammer a few times and it will come right off but if it is rusted then you should get a crankshaft dampner puller
I dont think you remove the nut in the center of the hub, your rotor is more than likely just rusted on to the hub.
probally if not to bad rusted with a wire brush if really bad rusted use a wire brush hand grinder wheel that is what helps me in when i have to weld rusty metal
After 20 years, rusted beams in buildings will cause them to start collapsing.
You can try spray lube like PB Blaster, but if its badly rusted a torch to heat it up is usually the only thing that works.
It is possible to remove rusted bolts from an automobile water pump using a product called Liquid Wrench. Spray the solution on the bolts and let sit for a few minutes. If this does not work, wait 8 hours and then use a torch to heat the bolts.
This has to do with an old bag which was given to me. And I do not wish to damage the bag because when I try to free up the zipper, it is so difficult as the zipper slide has rusted. I am trying with soap before I end up at the bag repair shop.
unadjust the rear parking break.... or the rotor is rusted to the axel.