GMC Trade Secrets
I have a single handle kitchen sink faucet. To service it, I have to remove the small set screw from the bottom of the handle. It became corroded and an allen wrench did not get it out. I tried liquid wrench and a screw extractor. I tried drilling it out. The set screw is still there.
Any suggestions short of a fire axe to get the set screw out?
Heat it with a propane torch and try the screw extractor again while it is still hot.
Get a metal drilling bit and drill the whole thing out. This will of course ruin the threading and you will have to retap the hole for a new set screw.
Replace the whole faucet. Cheap ones are on sale at ACO for $17 with a sprayer for a kitchen sink. It is what I would do, and I am a cheap DIY kind of guy if the other things failed, or there was a lot of corrosion so that I could expect future failures. Since you are taking off the handle, something is already wrong. Is it really worth fixing a corroded faucet, or is rreplacing it the best way to go? It is your call.
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