openscad

difference(){
difference(){
difference(){
difference(){

	difference(){
		difference(){
			import("/Users/icepodmacpro/Documents/3DGreenland/FINAL GREENLAND 3D PRINT/GrIS_icesfc_20th_polymask.stl");
			import("/Users/icepodmacpro/Documents/3DGreenland/FINAL GREENLAND 3D PRINT/GrIS_bed_20th_polymask.stl");
							}
translate([0,0,-20]) difference(){
scale([1,1,2])import("/Volumes/VARIANT/coastline_volume.stl");
translate([-5,-5,-10]) cube(size=[150,240,15]);
									}
							}

translate([0,219,-5])cube(size=[180,2,15]);
}
translate([0,-1,-5])cube(size=[180,2,15]);
}
translate([-1,0,-5])cube(size=[2,240,15]);
}
translate([122,0,-5])cube(size=[2,240,15]);
}