diff --git a/crates/viewer/src/main.rs b/crates/viewer/src/main.rs
index eb92d530..57daacb5 100644
--- a/crates/viewer/src/main.rs
+++ b/crates/viewer/src/main.rs
@@ -47,7 +47,7 @@ impl GameApp for ViewerApp {
         // Model sourced from:
         // https://nist.gov/ctl/smart-connected-systems-division/smart-connected-manufacturing-systems-group/mbe-pmi-0
         // let keycap = Shape::read_step("crates/viewer/models/nist_ftc_06.step").unwrap();
-        let keycap = examples::gizmo::shape();
+        let keycap = examples::flywheel::shape();
 
         let mesh = keycap.mesh();
         let cad_mesh = CadMesh::from_mesh(&mesh, graphics_device.device());
diff --git a/examples/src/bowl.rs b/examples/src/bowl.rs
index 9755bfe2..bfb2cd17 100644
--- a/examples/src/bowl.rs
+++ b/examples/src/bowl.rs
@@ -1,10 +1,10 @@
 use glam::dvec3;
 use opencascade::{
-    primitives::{self, Direction, Solid},
+    primitives::{Direction, Shape, Solid},
     workplane::Workplane,
 };
 
-pub fn main() {
+pub fn shape() -> Shape {
     let bot_rad: f64 = 30.0;
     let top_rad: f64 = 40.0;
     let height: f64 = 30.0;
@@ -14,16 +14,16 @@ pub fn main() {
 
     // inner ( shell does not exist yest)
     let inner = bowly_shape(bot_rad - thickness, top_rad - thickness, height, thickness);
-    (loft, _) = loft.subtract_shape(&inner);
+    loft = loft.subtract(&inner).into();
 
     // rouind out the top
     let top_side = loft.faces().farthest(Direction::PosZ).edges();
     loft.fillet_edges(thickness / 2.0, top_side);
 
-    loft.write_stl("bowl.stl").unwrap();
+    loft
 }
 
-fn bowly_shape(bot_rad: f64, top_rad: f64, height: f64, offset: f64) -> primitives::Shape {
+fn bowly_shape(bot_rad: f64, top_rad: f64, height: f64, offset: f64) -> Shape {
     let bottom = Workplane::xy().circle(0.0, 0.0, bot_rad);
     let mut top = Workplane::xy().circle(0.0, 0.0, top_rad);
     top.translate(dvec3(0.0, 0.0, height));
diff --git a/examples/src/flywheel.rs b/examples/src/flywheel.rs
index 351dc932..ea21a095 100644
--- a/examples/src/flywheel.rs
+++ b/examples/src/flywheel.rs
@@ -1,7 +1,7 @@
 use glam::dvec3;
 use opencascade::{angle::Angle, primitives::Shape, workplane::Workplane};
 
-pub fn main() {
+pub fn shape() -> Shape {
     let outer: f64 = 30.0;
     let height: f64 = 8.0;
     let thickness: f64 = 8.0;
@@ -10,14 +10,14 @@ pub fn main() {
 
     let ring = rim(outer, thickness, height);
     let sp = spokes(outer - thickness / 2.0, thickness / 2.0, spoke_count);
-    let (mut fly, smooth) = ring.union_shape(&sp);
-    fly.fillet_edges(1.0, smooth);
+    let mut fly = ring.union(&sp);
+    fly.fillet_new_edges(1.0);
 
     let the_hub = hub(hub_outer, thickness);
-    let (mut fly, hub_con) = fly.union_shape(&the_hub);
-    fly.fillet_edges(1.0, hub_con);
+    let mut fly = fly.union(&the_hub);
+    fly.fillet_new_edges(1.0);
 
-    fly.write_stl("flywheel.stl").unwrap();
+    fly.into()
 }
 
 fn rim(outer: f64, thickness: f64, height: f64) -> Shape {
@@ -25,7 +25,7 @@ fn rim(outer: f64, thickness: f64, height: f64) -> Shape {
     let mut ring = outer_wire.to_face().extrude(dvec3(0.0, 0.0, height)).to_shape();
     let inner_wire = Workplane::xy().circle(0.0, 0.0, outer - thickness / 2.0);
     let inner_ring = inner_wire.to_face().extrude(dvec3(0.0, 0.0, height)).to_shape();
-    (ring, _) = ring.subtract_shape(&inner_ring);
+    ring = ring.subtract(&inner_ring).into();
     ring.chamfer(0.1);
     ring
 }
@@ -51,7 +51,7 @@ fn spokes(length: f64, thickness: f64, count: usize) -> Shape {
     let mut first_s = spoke(length, thickness, 0.0);
     for i in 1..count {
         let s = spoke(length, thickness, incr * i as f64);
-        (first_s, _) = first_s.union_shape(&s);
+        first_s = first_s.union(&s).into();
     }
     first_s
 }
diff --git a/examples/src/lib.rs b/examples/src/lib.rs
index 312b91b6..7c4c148a 100644
--- a/examples/src/lib.rs
+++ b/examples/src/lib.rs
@@ -1,5 +1,7 @@
+pub mod bowl;
 pub mod box_shape;
 pub mod chamfer;
+pub mod flywheel;
 pub mod gizmo;
 pub mod high_level_bottle;
 pub mod keyboard_case;