Is there a solvent or dremel attachement that will remove this stuff from bolt threads?

You don't need solvent or dremel. It will keep any screw or bolt from loosening, but you can get the bolt/screw out with a screwdriver and just brush off the Loctite. Very good stuff.

Do I apply this to my doorknob set screw before screwing it in or after? (ie, a drop on top?)

Before. You apply this to the screw threads before screwing in. Make sure you only apply a very little bit. More is not better.

how do I open the sealed tube? do I just poke a hole at the top?

I think it's best to use a thumbtack, safety pin, etc. to poke a hole into the flat tip. This will give you "droplet-sized control" in application.

can this be used in glasses? The screws that hold the lenses in place?

No, it is designed for larger screws. Use Loctite 222 for small screws.

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🔒 Secure your build, unlock your peace of mind!

PRECISION FIT - Optimized for 6-20 mm fasteners, perfect for professional-grade projects
QUICK FULL CURE - Achieves maximum strength in just 24 hours, minimizing downtime
CORROSION DEFENSE - Seals threads to block leaks and rust, extending hardware life
TOOL FRIENDLY REMOVAL - Medium strength formula allows easy disassembly with standard hand tools
VIBRATION PROOF SECURITY - Locks nuts and bolts tight to prevent loosening under stress

Loctite Threadlocker Blue 242 is a medium-strength adhesive designed to lock and seal threaded fasteners sized 6-20 mm, preventing loosening from vibration and protecting against leaks and corrosion. It fully cures in 24 hours and can be removed easily with hand tools, making it ideal for professional and DIY applications.

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