How do I unscrew a screw that is stripped?

You could try using something like a small putty knife or thin prybar to pull out on the screw head while you turn it if the threads are stripped. If the head is stripped then try turning it with pliers if you can't get pliers on it. If its not very tight take a old screwdriver bit that fits the screw and super glue it to the head of the screw allow the glue to cure and then try to turn the screw. I only attempt this method on screws that are under very little pressure and that I believe to be less than one inch long. If I knew the kind of screw and what it was in I might have other Ideas.

Just because a screw hole is stripped -- does not mean threads on screw are

Damaged... In most cases you can put a prying pressure under screw head

On one side while unscrewing the screw... ( this should angle screw so threads

Engage with hole ) If you can get the claw of a wonder bar under head you

Can use it to apply pressure while removing screw...

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Originally Posted by ac101

You could try using something like a small putty knife or thin prybar to pull out on the screw head while you turn it if the threads are stripped. If the head is stripped then try turning it with pliers if you can't get pliers on it. If its not very tight take a old screwdriver bit that fits the screw and super glue it to the head of the screw allow the glue to cure and then try to turn the screw. I only attempt this method on screws that are under very little pressure and that I believe to be less than one inch long. If I knew the kind of screw and what it was in I might have other Ideas.

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Actually I went to the harcware store and they have a tool for this situation. They pretty much look like screws what it does is it turns the head which is either a flat head or phillips head and it just crips the screw together and comes right out.

Screw extractors, they sell these at Lowe's or sears, they come in a set of 3 for different size screws, they cut into the head of the screw and make there on notch to back the screw out, they cost around $20 a set

How do I keep a bathtub facet from leaking if the knob is turned off?

You have a wore out seal, you can get replacement parts from Lowe's or home depot,

For better answers on plumming you need to ask it in those forums, also speedball is a good one to ask also