extracting broken drill bits

[oldfart]

The day was going well until the foot peg bolt broke off flush with the frame    ok get the drill out, drill a hole and extract the sun of a bitch with an ezi out
20 mm in and the drill bit bites in and breaks off  ( HSS titanium coated ) pharrrrk  thats it for the day 

Done a google search and they say to use a left hand drill bit.........na this ones locked solid

Ok all you gurus what's the next step

[mx250]

The day was going well until the foot peg bolt broke off flush with the frame    ok get the drill out, drill a hole and extract the sun of a bitch with an ezi out
20 mm in and the drill bit bites in and breaks off  ( HSS titanium coated ) pharrrrk  thats it for the day 

This is a very good argument why you never you an 'eze out'. I think my next step would be to get down with  centre punch and try to turn the bolt. After that it would probably be one of them fancy plasma 'disstintergator' thingies.

Maybe other will have better news/advice.

[dirttracker]

the easiest way to get it out is to get a piece of 1/2'' copper pipe about 1/2'' long place it flush over the centre of the broken bolt then get a stick welder and 12 gauge 309 mo stainless welding rod then start building a weld inside the copper pipe just keep building the weld up until you can grab the weld with a pair of visegrips while it is hot spray with wd40 then undo the thing.

[holeshot buddy]

you could get a chicken beak to pry it out but the best way is to mig weld a nut onto the bolt
get the right size nut not to big not to small hold it central cut mig wire flush rest shroud on nut and weld  it will probably take you a few goes but it will work done it a million times the heat helps to loosen it
do not try to undo straight away let it cool for a minute 






it ran last time i started it 

[Maicojames]

I think the Titanium coated bits are crap, and extractors as well-for anything larger than 4mm or so. I have a few cobalt bits I use for broken bolts-on a Maico footpeg, I just drill it all the way through-slightly smaller than the threads-carefully. I can then pull out the trash with a 12 ga bore brush, and chase lightly with tap( be careful-every time you"clean out" a thread with a tap you enlarge it-thread chasers are available for this, being slightly smaller than the tap).

I like the copper pipe/mig weld idea-or weld a nut on it. Either way the heat will loosen it up. Unfortunately, if you have a freshly painted or powdercoated frame, the heat will burn it up-which made me do the fix I did on the Maico. BTW even if you bugger the threads, you can helicoil it.

[oldfart]

Thanks very much for the replies much appreciated ....mig welding a nut on top -then letting it cool did the job