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Knurl properties. Module knurl( k_cyl_hg = 12, module knurled_cyl(chg, cod, cwd, csh, cdp, fsh, smt) { cord=(cod+cdp+cdp*smt/100)/2; cird=cord-cdp; cfn=round(2*cird*PI/cwd); clf=360/cfn; crn=ceil(chg/csh); echo("knurled cylinder min diameter: ", 2*cord); echo("knurled cylinder max diameter: ", 2*cird); if( fsh < 0 } module label(string, size=4, halign="center", height=thickness+1, font=default_label_font) { module railRectSet(height, scale=1) { holeWidth = 5.08; //If you want a large timer-knob.

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