broken bolt and drilling when everything else has failed
Discussion
What tool are you going to use once you have drilled it?
My advice would be to use one of the snap-on multi spline exractor kits and not the traditional easy out.
I have a kit of these and have not yet had a broken bolt or stud defeat it,
HERE Be a linky
Take a look at page 195 to Page 199.
My advice would be to use one of the snap-on multi spline exractor kits and not the traditional easy out.
I have a kit of these and have not yet had a broken bolt or stud defeat it,
HERE Be a linky
Take a look at page 195 to Page 199.
If you have a welding system, at least some of the time you don't need access.
Iv'e even done it before with a car battery, although a welding system is preferrable to control the current.
All you do is get an old screwdriver and connect it via a lead to one end of a battery, the fixed bolt to the other. Touch them together and a few sparks later you will have a screwdriver welded to the bolt.
Warning, don't do it between frame and bolt or you will have effectively welded the bolt to the frame!!
Iv'e even done it before with a car battery, although a welding system is preferrable to control the current.
All you do is get an old screwdriver and connect it via a lead to one end of a battery, the fixed bolt to the other. Touch them together and a few sparks later you will have a screwdriver welded to the bolt.
Warning, don't do it between frame and bolt or you will have effectively welded the bolt to the frame!!
julian64 said:
If you have a welding system, at least some of the time you don't need access.
Iv'e even done it before with a car battery, although a welding system is preferrable to control the current.
All you do is get an old screwdriver and connect it via a lead to one end of a battery, the fixed bolt to the other. Touch them together and a few sparks later you will have a screwdriver welded to the bolt.
Warning, don't do it between frame and bolt or you will have effectively welded the bolt to the frame!!
That to put it mildly is b-----ks and bloody dangerous too ,do you realy believe that you will get a bolt out that is in tight enough to shear off with a welded screwdriver with mickey mouse s--t weld!!,, dream on!!!!Iv'e even done it before with a car battery, although a welding system is preferrable to control the current.
All you do is get an old screwdriver and connect it via a lead to one end of a battery, the fixed bolt to the other. Touch them together and a few sparks later you will have a screwdriver welded to the bolt.
Warning, don't do it between frame and bolt or you will have effectively welded the bolt to the frame!!
one eyed mick said:
That to put it mildly is b-----ks and bloody dangerous too ,do you realy believe that you will get a bolt out that is in tight enough to shear off with a welded screwdriver with mickey mouse s--t weld!!,, dream on!!!!
As much as I appreciate your input I'm not suggesting anything I haven't already done. P.S. Could you tone down your posts a little as you come across quite angry for some reason.one eyed mick said:
That to put it mildly is b-----ks and bloody dangerous too ,do you realy believe that you will get a bolt out that is in tight enough to shear off with a welded screwdriver with mickey mouse s--t weld!!,, dream on!!!!
Nope. Sorry, but that works. I've seen it done with6 12v car batteries linked together. 72 volts will sort the problem. If you're welding a screwdriver to it, its going to be an old one so you won't be worried about whacking a pair of stilsons on it to get the leverage to undo it.Sorry about the language , but I still maintain what you sugest is very dangerous not to say stupid ,I ve been on the tools all my life and yes have done some very stupid /dangerous things but to suggest radical action like this on an open forum is alittle scary to say the least. To the op where abouts on what vehicle is the offending bolt ? ,acsess cannot be too bad if you can get in to drill ,a few details please
Not sure why you would think its dangerous. Assuming there are no volatile substances nearby.
The 12 volt battery isn't capable of electrocuting anyone.
You can control the current by either instituting a resistance or simply time sharing the current flow.
There will of course be a lot of heat generated but that is to be expected.
If you just leave it you will muller the battery, but the battery won't explode so I'm not sure why you consider the whole process too dangerous.
I believe it was quite often used as a poor mans stick welder in long days gone past.
The 12 volt battery isn't capable of electrocuting anyone.
You can control the current by either instituting a resistance or simply time sharing the current flow.
There will of course be a lot of heat generated but that is to be expected.
If you just leave it you will muller the battery, but the battery won't explode so I'm not sure why you consider the whole process too dangerous.
I believe it was quite often used as a poor mans stick welder in long days gone past.
Battery explosion is poss the main concen --have you not seen one go up?-I can tell you it can get very messy ,the risk is from gas from the batteries? and sparks they really like getting together !!. Iam concerned for peoples safety if you want to live dangerously who am I to to rain on your parade ?
Okay I understand that, and I agree you need to be careful.
But as I understand batteries though you are very unlikely to get it to explode.
As far as I remember discharging a battery in this way gives you lead sulphate and water from the chemical reaction. No hydrogen is produced. A lot of heat and electrical energy is produced but no explosive gasses. When you think about this if a battery could explode when discharging next to an ignition/heat source they wouldn't be much use for starting cars where they are often discharged quickly and sat next to exhaust systems and fuel rails.
If you were trying to get a battery to explode, it would be much better to do the opposite and charge it while keeping it sealed by blocking its venting.
In this way the charging does the reverse chemical reaction and gives leadoxide/lead and heaps of sulphuric acid from which you will get hydrogen bubbles produced in a localised area which you could explode with an ignition source.
Having said that though your alternator is charging your battery in a normal car as well and cars don't go bang all the time.
I appreciate that it probably isn't the most health and safety way to go about the solution but I don't think its particularly worthy of your darwin award.
If you saw me with the liquid nitrogen, then you'd have a point
. If you ever have to make the decision as to whether you want a small amount of liquid nitrogen on your hand or a small amount of battery acid, choose the battery acid. Liquid nitrogen hurts, a lot!
But as I understand batteries though you are very unlikely to get it to explode.
As far as I remember discharging a battery in this way gives you lead sulphate and water from the chemical reaction. No hydrogen is produced. A lot of heat and electrical energy is produced but no explosive gasses. When you think about this if a battery could explode when discharging next to an ignition/heat source they wouldn't be much use for starting cars where they are often discharged quickly and sat next to exhaust systems and fuel rails.
If you were trying to get a battery to explode, it would be much better to do the opposite and charge it while keeping it sealed by blocking its venting.
In this way the charging does the reverse chemical reaction and gives leadoxide/lead and heaps of sulphuric acid from which you will get hydrogen bubbles produced in a localised area which you could explode with an ignition source.
Having said that though your alternator is charging your battery in a normal car as well and cars don't go bang all the time.
I appreciate that it probably isn't the most health and safety way to go about the solution but I don't think its particularly worthy of your darwin award.
If you saw me with the liquid nitrogen, then you'd have a point
. If you ever have to make the decision as to whether you want a small amount of liquid nitrogen on your hand or a small amount of battery acid, choose the battery acid. Liquid nitrogen hurts, a lot!Get a decent welder to weld a nut on the stud. A good welder will be able to build weld up on the stud, even if it's bellow the chassis plate.
We have a tame Lloyds certified welder at work, and I haven't seen him beat yet. The heat from the weld will free the stud. He's got M6 out for me in the past. If you try drilling and go off centre, it's game over. If you try and use an easy out and break it, you're definitely screwed, if you'll excuse the pun
We have a tame Lloyds certified welder at work, and I haven't seen him beat yet. The heat from the weld will free the stud. He's got M6 out for me in the past. If you try drilling and go off centre, it's game over. If you try and use an easy out and break it, you're definitely screwed, if you'll excuse the pun
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