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There is a thing on instagram called the # razorbladechallenge.
Mostly using box cutter blades which are a bit easier than single edge razor blades.
TIg welding box cutter blades can be very good practice because it makes you get used to focusing your eyes on a very small puddle, you have to get used to using a very small filler wire, and you also see how beneficial it is to use aluminum backing on thin metal.