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BackKnurl( 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 max diameter: ", 2*cird); if( fsh < 0 ) { union() { z_position = sphere_indents_radius + (enable_stem ? Stem_height : 0) + knob_height - cone_indents_cutdepth; for (z = [0 : cone_indents_count]) { // only keep everything starting at the first " . $entry->textContent . " if (preg_match("@.*(