Broken Bolt Removal

[HopCar]

Some good ideas on this video for removing broken bolts.

 

[GFC]

Thanks Parks, I have a broken bolt on my boat that I now think I have a way to back it out.

 

[warfdog]

I want a set of hollow bolts now - the video said they were drilled out on a lathe but who has a lathe!

 

[HopCar]

I want a set of hollow bolts now - the video said they were drilled out on a lathe but who has a lathe!

I was thinking the same thing. I bet a machine shop wouldn’t charge much to drill them for you. Sounds like a business opportunity for the companies that make the bolt extractors.

 

[DavidM]

Unfortunately, in my limited experience, bolts shear near the surface and don't leave enough threads to screw a hollow bolt into.


David

 

[bayview]

Most bolts are not as hard in center as the threads and can be drilled fairly easily from the bottom end . Keeping straight is a challenge and start with a small drill then go up in size. badly rusted bolts are best drilled all the way through and stepping up to a large diameter drill. This seems to reduce the tension between the now shell of the bolt and the hole and make removal easier.