21 replies to this topic

[nicklouse]

Have a watch for those that want to know how to deal with stuck and broken studs in cast iron.

 

https://youtu.be/khQEC38X_mA

[Tornado99]

Have a watch for those that want to know how to deal with stuck and broken studs in cast iron.

 

https://youtu.be/khQEC38X_mA

 

This is a good method when there is enough stud remaining outside the hole to weld to or get  mole-grips on. When the stud/bolt breaks off nearly flush with the surface or even down in the hole, other methods need to be employed such as drilling a pilot hole to fit an Easy-Out extractor or similar bit. Fully drilling out the stud's core, then chasing with a tap is also possible. 

[sonscar]

Easy out?I find them as snap off in the hole outs.Not my first or perhaps ever choice.You may of course be less ham fisted,Steve..

[bpirie1000]

With heads becoming difficult to find i would get someone who has expertise to do this.

Quite easily ruin a head, causing you a HEAD ache.........(oh dear)

[Stu1961]

Could have them spark eroded 

[panky]

In the past, if snapped off flush, I've used a mig to blob weld on the end of a broken stud and build it up enough to bash an old socket onto it, usually comes right out.

[stoneface]

Another good way to heat up flush broken studs it using a tig welder, if you have one.

 

Great for applying heat to a very local area. You don't have to melt the metal and if you have a foot pedal you can control the amount of heat input very precisely.

 

I use this method for removing oil gallery threaded plugs. You can apply the heat down the bottom of the hex socket without damaging it and then wind it our with an allen key.