Steel construction is fast and noisy and lots of sparks, very exciting. and there is no room for fussy. The material allows you to simplify your image. I make a steel rod armature, if it is a small piece I often use long nails welded onto a base plate. Then clad it with random shaped off-cuts of sheet steel.
Recently I have scavenged old steel machinery parts that are from an old municipal dump, they are wonderfully corroded and make for joyful images.
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