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What is the best way to break a nut off the back axle of my bike? Answered

The nut holding the back axle of my bike is stuck on. I tried to drill through it, but the axle is too hard for my drill and the nut is stripped (the outside; I can't use a regular wrench). I have no idea what to do and it is very close to the frame, which I really don't want to hurt.



Just go to the automotive parts store and purchase a nut cracker tool. Its real. It has an opening that you put the nut in ant there is a knob that you turn a wedge into that splits the nut.

You could grip the nut with some vice grips and turn it off. To help it come off you could spray it with a generous amount of penetrating oil or WD-40 and let it sit for a while.

Ditto. You may need to wait overnight and apply WD-40 multiple times. If you want to extend the lever arm of your vice grips, stick a piece of PVC pipe onto the handle - if you arrange things properly, you can just step on the PVC.

I would suggest metal pipe over PVC. PVC is much weaker and more flexible, and the chemicals used in its production are extremely harsh to the environment.

Use the thinnest oil you can find (liquid wrench maybe), apply it, wait, heat the nut up with a blowtorch, add more oil (NOT with the torch running, that thin stuff is flammable), tap it sharply with a light hammer, add more oil, heat, oil, tap, lather, rinse, repeat. keep doing this until you can get it off with vice grips. if this fails, use a grinder to ever so carefully grind flats back onto the nut, and try an open end wrench and hammer technique. if that fails, grind one side of the nut until it wears through, and just work it off like that.

use a dremel with a reinforced cut off wheel!

. Go to a local auto parts store and ask for a nut buster*. They may loan you one, but are cheap enough to buy.
*Not a recommendation, just the first decent pic I found.

Graphite oil is often used instead of WD40 too, it has capabilities specifically suitable for these jobs, it creeps in the most narrow areas. Available in car-parts and bicycle-parts and DiY shops. It's sometimes also sold in places where they make spare keys, in not so economical tiny bottles for lubricating locks.