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Thickness-1; module label(string, size=4, halign="center") { color([1,0,0]) linear_extrude(thickness+1) text(string, size, halign=halign, font=font); } module knurled_cyl(chg, cod, cwd, csh, cdp, fsh, smt crn=ceil(chg/csh); echo("knurled cylinder min diameter: .

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