screw grab compound?

[coppercone2]

I see there are compounds meant to help extract busted screws. A few youtube videos seem to show success.

Does this stuff work good?
https://www.baselabtools.com/Screw-Grab_p_1904.html

[jpanhalt]

Seeing is believing.  Apparently those adhesives work great, for those users.

In sum, adhesives can have a use, but they will not extract a rusted, 3/8" broken stud from an engine block.  I prefer other methods.  The method must be adapted to the situation.   

For Phillips head screws that have ruined slots, but are not otherwise stuck, I have used epoxy.  For more difficult instances , I have used LH drill bits, taps, and/or screws to get them out.

[Infraviolet]

If a screw head is not in a recess, then using a small vice (one you can hold in your hand, not something big fastened to a table) to grip across the sides of the head often lets you twist even a pretty rusted screw with a stripped head free. If it is in a recess, running a power drill backwards against the screw head sometimes works, use a drill bit you don't care about and hope if somewhat grabs the damaged remains of the screw's cross/slot/hex... as it turns, over time as it spins there are many chances for it to grab the stripepd head and start unfastening.

[mendip_discovery]

Pick up a set of vessel JIS screw drivers. They don't cam out as much as the phillips/positive ones.

Pickup a impact driver. The turn the way you want to undo and hit with a hammer. Very good at getting some stuff out.

Left handed drill bits are also handy.

The grip glues etc are handy with allen or torx stuff as I think it fills the gap and prevents the rounding in the first place. I have often just used epoxy glue for that, even hot glue does the job.

I have managed a few times with just a bit of inertube rubber or a rubber band to give some extra grip.


Hmm makes me wonder is a rubber on the end of a drill bit would help with some stuff.

[coppercone2]

yeah I heard putting a rubber band on a joint helps too, like wide brocolli band

but this compound seems nice to have because I can leave it around in smaller tubes or syringes and use with whatever screw driver i got where ever I am

i think ima try it soon

[Doctorandus_P]

A mixture with something like silicon carbide or diamond grit, combined with something to make it stick such as petroleum jelly is probably a good starting point for DIY.  And you can make it without the extreme marketing markup of those big brand names. To give you an idea, diamond costs around EUR300/kg. It is after all just a carbon allotrope.

[coppercone2]

well it requires to know which grit will be good to make the purchase pay off

I know I can experiment with different abrasives / pastes but I don't exactly have a abrasive materials laboratory

[Veteran68]

A rubber band can work in a pinch of there's enough irregular shape in the head for it to grab on to, but if the head is rounded out smooth or the screw/bolt is seized or just really right (such as when rusted, or in hardwood) then the best bet is a set of screw extractors. These consist of a special drill bit to size the hole in the head properly to accept a matching reverse-threaded bit that bites into the head while reversing in a power drill.

Have to be careful though not to over-drill out the hole, or you'll drill off the head completely and be left with only the shaft of the screw/bolt, which if small will probably have to be drilled completely out.

[coppercone2]

how about putting a dash of electronics silicone into a screw to act as rubber? So long you have cure time it adheres pretty good.

I had to undo a screw that had some silicone in the head and thought of this.