Best way to remove a welded part?

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I need to move a jack that I welded to my trailer to install a fuel can box. What is the best way to go about this without using a torch? May not be the strongest weld since it is one of the first I did, but seems strong enough at this point. I don't want to compromise the trailer frame though, so is this even advisable? Pretty sure it is 3/16 angle. Thank you. Yes yes, I know-- should have planned it out better Daniel 5:23
Reply:can you get to it with a grinder, or cut off wheel?
Reply:Use the Acme Un-Weldinator.  Cutting torch (O/A or plasma), cut-off wheel, sawzall, hack saw, etc, etc.
Reply:Try to cut only the weld, without going into the trailer frame at all. go in with a cutoff wheel, cut just short of going into the jack or the trailer then see if you can pry it off, or get a chisel in there and start tapping it and tear the remaining weld. but thats just what I would do
Reply:File it off with a three sided file, by the time you get it done you will have the next trailor all planed and won't have to redesign it.  hehehe only kidding the cut off wheel works well but remember cut off wheels are for cutting not grinding.Life is tuff,so be sharp  lincoln sp 100  cutmaster101  miller bobcat  miller 250 mig  $thousands in snapon
Reply:A picture would help us advise you...MM252 w/30AMM140 w/o AS w/SM100 w/CO2TA ArcMaster 185 TIG/StickTA 85 TIG/Stick LunchboxHobart (Miller) AirForce 625Hobart AirForce 250ciVictor O/A (bored)Lincoln Patriot AutoShade (freebie)45ACP for those stubborn jobs...
Reply:Got an Arc Air cutter? Makes it easy. I wash off the weld with a scarfing tip in my A/O torch other wise. You can buy a scarfing (or gouging) tip but they are very easy to make. Take an old cutting tip and drill out the cutting orfice to about three times it's original diameter about 3/16" deep and you have a scarfing tip. Turn your oxygen pressure down to around 15-20 pounds. Lay the tip almost parallel with the weld and wash it off.
Reply:This wouldn't be the recommended way to do it by any means.  But if you don't have, or have access to, the tools mentioned above you could always crank up the amps on your stick welder and melt the old weld away using a thick rod or one of the AC type cutting rods.  The jack bracket will most likely have to be sacrificed to do it but if done correctly the frame won't suffer.
Reply:Put a cutting disc on the grinder and go to town on it, then smash it with the hammer. I'm serious.
Reply:What idon'tknow said works well. I'd use my torch with a scarfing tip or my arcair, but I have many years of experience with those. The grinder works well either with a disc or cutoff wheel and if you are careful the jack will be re-useable as well.The difference between art and craft is the quality of the workmanship. I am an artist.
Reply:You can use the desperate man air-arc:Air blow gun in one hand, electrode holder in the other. Really desperate man, can scrounge carbon rod  too; like from a flashlight battery.Good LuckLast edited by denrep; 03-07-2008 at 09:21 PM.