Flux core welding

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Hi Need some help.I was laid off several months ago from a maintenance supervisor position and have not been able to get another position.Long ago in another life, I was a welder and was nuke certified with stick & tig and can still weld & have had some experience with mig. Went for a job interview & they want me to take a flux core test.I have never done this & ASSUME it to be similar to mig.Any one with helpfull suggestions would be appreciated.Thanks
Reply:Flux core is like mig except you have a little slag to brush off, and you hold the wire at more of a straight in angle than leaning in direction of travel, with your backround  an hour of practice and you will ace it.