I use a thin cut off disc with my 4" grinder, which works great
Lee
----- Original Message -----
From: "Bruce K" <bekett@uslink.net>
To: <oletrucks@autox.team.net>
Sent: Monday, September 29, 2003 11:14 AM
Subject: Re: [oletrucks] Breaking old welds
> I just did a bunch of this disassembling an old trailer to convert
> it to a car hauler.
>
> Sometimes an air chisel can be used to run right up the weld and
> cut it loose. If the weld was good quality though, forget this.
>
> Sometimes if you have a 4" surface grinder, you can use the edge
> of the wheel to cut into the weld and either cut it completely or
> weaken it so the air chisel will work.
>
> An Oxy/Acetylene or Oxy/Propane torch usually works OK. Start by
> cutting next to the weld on the part you want to remove. A quarter
> inch away or so is fine. This will usually leave the part you want
> to keep OK and give you a better idea on what is going on in the
> weld.
>
> There is nothing worse than trying to cut through old welds. Carefully
> work away the remaining metal with the torch, leaving a little of
> the weld to grind off smooth. You will probably wind up burning
> most of the weld and attached scrap metal away. It seems to work
> best if you cut from the scrap side of the weld parallel to the surface
> you want to keep. This uses a lot of oxygen.
>
> I don't know about this Oxy Mapp torch, if it is able to cut metal
> and so on. If so, it might work. Otherwise you may have to find
> another buddy with a real torch.
>
> Maybe this could be a project if your local school offers night school
> welding classes. I used to sign up 1-2 times a year for a night
> machine shop or welding class just to get some stuff made. Since
> I was a repeat customer, the teacher just let me go about doing my
> thing.
>
> Anyone ever tried to remove welds with a plasma cutter?
>
> If you have lots of rust between the two pieces of metal, be careful.
> When you heat thick rust it gives off steam and explodes like a
> firecracker. Make sure you wear good face, hand, and arm protection.
>
>
> Good Luck.
>
> Bruce K
> 57 3200
> Mt. Iron, MN
>
>
>
> At Saturday, 27 September 2003, you wrote:
>
> >I am trying to get the frame of my truck completely stripped of all
> >components before it goes to the sand blaster. At some point an
> owner of the
> >truck welded a Reese (sp?) hitch onto the back of the frame. A couple
> of
> >problems for me. One is the brackets are weld over the bolts that
> the rear
> >bumper brackets use to attach to the frame rails. The other some of the
> >welds are damn near impossible to get at. I cut out the bulk of
> the home
> >made brackets and the hitch is removed. However I need to remove the
> >remaining junk.
> >
> >I have tried using an angle grinder to attack the old welds, an
> although
> >messy, it seams like I could get some of them this way. There are
> others I
> >won't be able to get at this way.
> >
> >I don't own any welding equipment, but my neighbor has a sears oxy/mapp
> >torch if this could help.
> >
> >What is the best way to remove or break these old welds?
> >
> >Bill Schickling
> >oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
> >
>
>
>
>
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> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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