diff --git a/wireframe.c b/wireframe.c
index 3f69dec..bfeb1ba 100644
--- a/wireframe.c
+++ b/wireframe.c
@@ -222,7 +222,6 @@ int main(void)
 	const stl_header_t * const hdr = (const void*) buf;
 	const stl_face_t * const stl_faces = (const void*)(hdr+1);
 	const int num_triangles = hdr->num_triangles;
-	const float thick = 7.8;
 	const int do_square = 1;
 
 	fprintf(stderr, "header: '%s'\n", hdr->header);
@@ -295,17 +294,21 @@ int main(void)
 	}
 
 	fprintf(stderr, "%d unique vertices\n", num_vertex);
-	printf("thick=%f;\n"
+	printf("thick=1.0;\n"
+	    "radius=1.0;\n"
+	    "leg_height=1.0;\n"
+	    "wall=0.5;\n"
+	    "smooth=100;\n"
+	    "leglen_percentage=0.48;\n"
 		"module connector(len) {\n"
 		"  render() difference() {\n"
-		"    cylinder(r=thick/2+2, h=2*thick);\n"
+		"    cylinder(r=thick/2+wall, h=leg_height*thick, $fn=smooth);\n"
 		//"    translate([0,0,len/2+2]) cube([thick,thick,2*thick]);\n"
-		"    translate([0,0,thick/2+2]) cylinder(r=thick/2, h=2*thick);\n"
+		"    translate([0,0,thick/2+2]) cylinder(r=thick/2, h=2*thick, $fn=smooth);\n"
 		"  }\n"
 		//"  %%translate([0,0,len*0.48/2]) cube([thick,thick,len*0.48], center=true);\n"
-		"  %%translate([0,0,0]) cylinder(r=thick/2, h=len*0.48);\n"
-		"}\n",
-		thick
+		"  %%translate([0,0,0]) cylinder(r=thick/2, h=len*leglen_percentage, $fn=smooth);\n"
+		"}\n"
 	);
 
 	for (int i = 0 ; i < num_vertex ; i++)
@@ -317,7 +320,7 @@ int main(void)
 			v->p.p[2]
 		);
 		
-		printf("sphere(r=%f); // %d %p\n", thick/2+2, i, v);
+		printf("sphere(radius, $fn=smooth); // %d %p\n", i, v);
 
 		for (int j = 0 ; j < v->num_edges ; j++)
 		{
@@ -333,7 +336,7 @@ int main(void)
 			if (do_square)
 				printf("connector(%f);\n", len);
 			else
-				printf(" cylinder(r=1, h=%f); // %p\n",
+				printf(" cylinder(r=1, h=%f, $fn=smooth); // %p\n",
 					len*.45,
 					v2
 				);