Ive been welding for 50 years,never used DC until 5 years ago.I borrowed an old Airco mig welder that also did AC DC stick welding.I used mig to fix the cab on my old truck.I tried DC on some welding jobs and saw the difference right away.Didnt have the money for a DC welder so went to work on a DC converter for my AC welders.I had some parts and bought some for the project.Cost about 100.00 to build.I would not buy an AC only welder today if I was just starting to weld.I have used a 100 amp welder in the past and would not take one as a gift.120 volt welders can barley start an arc on stick welding.I did buy a 130 Miller mig welder used.It works well on jobs within its range.Beginning welders should wait until they can afford an AC DC welder...
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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