Technical Screw removal HELP!!!

I"v done this with screws and after letting them cool to room temperature, have had some come out with using only my hand.

 

And, you'll smell great. I wonder why this works?

 

Get a screwdriver with a hex shaft. Find the right open-end wrench to fit the shaft. Brace up the part with a towel in a vice.

 

Heat and shock with ICE COLD water several times.

 

The Tig is what I do and have had very good luck. Even with the bolt broken off below the surface, I build up the broken stud until it is above the surface, then place a nut over it and weld the nut on. Grab a wrench and it usually comes right out. I use just standard E70S6 rod. I would be curious as to the advantage of using SST rod.

Pot metal depending on the alloy could have a melting point as low as 800F. So be very careful with the heat. I usually keep compressed air handy to cool it if I am welding pot metal. Blow carefully in case it is melted!


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That was all great advice, and I used most of it. I got both screws out. Got the nut off the main shaft. The base is still stuck on the shaft, but for now I have it soaking in vinegar. Really melts rust fast. One thing happened though. I had it on my workmate outside, and it was bumped, and fell on some ice and broke off part of the base. I am going to use Super Alloy 1 and solder the pieces together again. I ground down the paint and mud off the hood. Someone had already welded in a patch and shaved it. Lucky I had that part of the hood that came with it so I can use it as a template to drill out the hood again. There is also a piece missing on the underside of the hood that is a stop for the handle. That other piece of the hood has a good one. I will have to take both pieces apart to replace them.