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Cutting with a stick welder question

7K views 13 replies 13 participants last post by  The_Blacksmith  
#1 ·
I need to cut out a weld in an area I cannot get a tool into.

I do not have access to a cutting torch. I have a Lincoln AC/DC 225 stick welder "Tombstone". I just purchased some Hobart Cutting/Chamfering Electrodes (H990001-RDP). They are 3/32" thick.

I need to know what amps and polarity to use. I found some technique videos on Youtube, but any advice is appreciated.

I'm surprised Hobart does not offer any of that info with the electrodes.
 
#6 ·
No they are not. They are cutting/chamfering rods as stated by the OP. I have some in the garage right now. No air supply needed. They will also do a butt ugly job of cutting aluminum... not that they leave a nice kerf in steel.

Papa
 
#3 ·
electrode negative crank the amps all the way up and if needed use an air blow gun to blow the puddle out
 
#5 ·
I also need to cut apart a skid steer pallet fork that was welded in place and can't get cutting tools in there. Are you telling me that I can just use 3/32 6010 at 50% the normal current and it will cut without extra air or anything?
 
#8 ·
Are you telling me that I can just use 3/32 6010 at 50% the normal current and it will cut without extra air or anything?
150% of normal amperage. And I think it helps if you dip the 6010 in water first.
 
#7 ·
Correct. Those are not carbon arc air rods. You dont need air or an arc air set up to run those. All you need is your stick electrode holder.
They are deep gouging rods. Certainium also makes a cutting/gouging electrode for a stick welder. These types of rods will gouge and cut but they are not neat. They can be messy but they do the job.
If I cant use my plasma cutter to cut or gouge, I just use 6010 and crank up the amperage if I need to use a stick electrode to pierce a hole in something.
 
#10 ·
When cutting or piecing with 6010, do you use DCEN? I know 6010 is Reverse polarity to weld but in my mind, Straight polarity would cut/gouge better than DCEP with 6010.

As mentioned, Electrode negative for Arc gouging rods and I believe but not confirmed that Plasma cutters are also Straight polarity (DCEN).

In Straight polarity, electrons are emitted from the electrode and bombard the work.