Anyone had any experience of these? only heard about em yesterday and a brief search brings up a little info on google!
ANything o avoid in particular?
If you mean gouging rods then you will need fume extraction or use them outdoors as they produce lots of fume.You will also find them easier to use with a large arc welder say 300+amps as it is the force of the arc that blasts the metal away.I have seen them used with a special electrode holder that connects to an airline and gives an additional blast of air to aid removal of metal and this seems the most effective way of using them
Dunno was a brief conversation
Basically we were trying to remove a stuck roll pin and my mate had heard that you could bodge a homemade cutting electrode by using a wet regular arc electrode, as you can guess it didnt work!
Was wandering if its worth getting some of these cutting electrodes to keep on standby should a similar situation arise agian
Ah, you mean dip a cellulosic rod in water and turn up the amps? Mmm, its a bodge but occassionally it works, the idea being the cellulosic is more tolerant to moisture, and the water turns to steam which helps with the cutting action. Ugh...
Arc gouging requires a special torch, compressed air, and a 3-phase machine. Dont bother buying a few rods to run of a standard arc welder for 'bodge jobs' as it wont work
You will need a welder that will do 400-600amps, (150-200 for small applications) the special torch for compressed air removal of molten metal from the pool, and a lot of protective equipment.
Bes stick to grinding or plasma cutting/OxyA cutting
haze
If you are back gouging welds in plate from 12 to 100 mm The "arcair" torch is the fastest accurate metal removing process in the business and has been for over 50 years to my knowledge. It is not, however, very user friendly.