Simple rai

rail.scad

include <libstuff/bolt_commons.scad>
use <libstuff/imbus.scad>

module sbr16_rail(length){
	echo("SRB16x" + length);
	rotate([90,0,90]){
		linear_extrude(length){
			import("16-rail.dxf");
		}
	}
	for(i = [20:150:length]){
		for(j = [-15,15]){
			translate([i,j,0]) 
				children(0);
		}
	}
}

sbr16_rail(340){
	translate([0,0,5]) rotate([0,180,0]) imbus(M4,10);
}