Removing Broken Screw from Small Elements: Techniques for Tiny, Delicate Items

Question

Hello!
Well, I unscrewed the screw and, to be honest, I did not use any force, and here, smack and screw - she broke off in the middle.

The element is quite small, so the screw is also small.

What do you advise to do? Drill? I am asking because I do not want to spoil anything - I will not buy this item anywhere.

Greetings!

emil_elektryk · Accepted Answer

Try to drill with a tiny drill and then with a left-hand thread extractor, if that doesn't help, try reaming to a larger size and re-threading as long as the sides aren't too thin. Oh, maybe it's a scooter clamp?

tomus2k · Accepted Answer

Take it to a locksmith, it is nice to drill it on a milling machine without damaging the thread. All extractors have this characteristic that they break and you will not drill it with anything.

Błażej · Accepted Answer

I would drill it through and then screw it out.

streamck · Answer

emil_electric , unfortunately not. This is the part that mounts the left throttle of Chinese production from a market bike. I will try to drill as soon as I charge the batteries for the screwdriver, because I will not even try with a drill - too high speed.

Anonymous · Answer

Extractors are used for this purpose. You have to drill a hole in the broken screw, then fit the appropriate size extractor and ... twist.

pbkat · Answer

There is one more patent. It is enough to weld another piece of bolt to this broken bolt and then unscrew it.

szakal_1990 · Answer

There is another patent for something like this. If the screw had an error and it did not jam, take a flat screwdriver and a hammer, use all your strength to make a notch on the screw and unscrew it like a screw. This technique was used by his father-in-law when working in a foundry where the screws were often cut off.

zimny8 · Answer

In the first photo you can see that part of the screw is visible (the arrow shows this place) if you can insert a small flat key there (you can still bend it) then saw, e.g. with a square file, two surfaces under the key.
You will do it the fastest / easier.

krzycho123 · Answer

Exactly, on the thread on the side, use a file to flatten the thread and use a wrench or even a small frog with a pipe wrench for the thread and unscrew.

ElectroTom · Answer

To the advice of colleagues, I would add treating the WD-40 screw or, for example, with kerosene (about a few hours). Greetings.

sm48 · Answer

Small chisel and hammer. You put the screws on the edge and hit it with a hammer. It always works

ElectroTom · Answer

There is also an impact extractor. Only be careful with duralualumin. Greetings

krakarak · Answer

First, put a rust remover on the broken screw, then drill the hole, adjust the triangular file, insert it with feeling (it acts like a wedge), fix it in a vice and then slowly twist the pliers while pressing the file against the hole. It works.

tom71 · Answer

First, put a rust remover on the broken screw, then drill the hole, adjust the triangular file, insert it with feeling (it acts like a wedge), fix it in a vice and then slowly twist the pliers while pressing the file against the hole. It works.
It's okay, just not this tool. Files break very easily. In the workshop, we hammer the torx into the drilled hole, remove all the screws with a small rattle and the M10 wrench. Any extractors like to break. Tomorrow I will be at work, take a picture of the removed piece of M4 screw, not yet removed from the torx and throw it in. The method I described costs little time, and at the same time little nerves, etc. Regards.

kwantor · Answer

The extractor is an anti-twisting gadget, because the greater the resistance, the more tapered the thread opens.
If it gets stuck in the duralumin, it can be very difficult to wring out like this.
As long as the conditions allow, it is good to heat up to, say, 300 degrees and more (not to melt) and throw it into cold water, if you are lucky, it twists in your fingers.
It is best to drill and make the thread a size larger than the conditions allow, because drilling and trying to thread the same rarely succeed (lack of drilling precision) then a piece of the old thread loosens and locks the tap, which cannot be done back or forward move without stopping.
The mentioned use of a torx is a very good method.

Angry_Us3r · Answer

As colleagues write - file two surfaces. But not under the key, just grab it with decent blacksmith's pliers and you will twist it like butter. Recently, I had an allen in one bonnet screw in the car and, despite the key fit, 10 did not want to go, I grabbed it with pliers and it went like a petal. Good luck :)

http://e-equus.pl/bilder/obcegi_do_kopyt_knipex.jpg

They give a lot of strength

Anonymous · Answer

I never play reaming, I always use this patent, which in my opinion is the best. If it is something, weld it with MIG.

Qujav · Answer

Colleagues have ideas from outer space, how the screw is not seized completely, is a drop of metal glue and press it with a screwdriver. MIG welding ..

kwantor · Answer

Of course, the nut is put on and welded, unscrewed with a wrench.

Anonymous · Answer

Exactly. It's a trivial way.

tom71 · Answer

I can see that I have to paste this picture. What I wrote about, for example, these are facts, this is part of my work, of course, we also use nut welding, but you have to count on your intentions and make the right and quick decisions, especially when you work in maintenance. We came up with the idea with the torx together with a friend from the car repair shop, who in addition, like me, deals with power hydraulics, where there are broken stubs, screws with a hardness of 8.8, too, it's almost everyday practice, so testing with glue ... But what will he do the author of the topic is his decision, and it will not be easy, because there are many ideas. I greet everyone.

Anonymous · Answer

What's the problem? You take the nut, put it on and weld it in advance, then wait a moment and turn it out with a wrench, and that's it. Yeah .. you will surely make it, good luck ..

kwantor · Answer

Each client has his own buyer .. It is impossible to weld in a broken M4 bolt and many other situations, sometimes you have to drill a 10.8 bolt.

Anonymous · Answer

See that this thing is small? Unless you have a welder for the dwarfs.

kwantor · Answer

Redundant attention, because after all. And I have given this as an example for someone who he was terribly surprised Such bolts are welded from M8 upwards, so that no longer amaze more.

zimny8 · Answer

It is impossible to weld, what will you drill in the M4 10.8? The rest is SF

Błażej · Answer

The author wrote two posts in the thread and has been silent since April. Maybe he removed this screw long ago? And you guys are still up there. If the author does not respond to the thread, the whole thing will go to the basket, as a beating foam about nothing.

zimny8 · Answer

Full support . you have to

kwantor · Answer

This is not advice, but an explanation- buddy, it's about hardness, because welding sometimes also fails, as well as the thinking of some ... The screw is seized - it will twist on the glue .. Drilling a 4mm hole with a 10.8 .. Because i know

[Solved] Removing Broken Screw from Small Elements: Techniques for Tiny, Delicate Items

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