diff --git a/experiments/2025-03-18/src/render/geometry.rs b/experiments/2025-03-18/src/render/geometry.rs
index 144f302bd..d205580bb 100644
--- a/experiments/2025-03-18/src/render/geometry.rs
+++ b/experiments/2025-03-18/src/render/geometry.rs
@@ -1,7 +1,7 @@
 use glam::Vec3;
 use wgpu::util::DeviceExt;
 
-use crate::object::Object;
+use crate::geometry::TriMesh;
 
 use super::vertex::Vertex;
 
@@ -12,9 +12,7 @@ pub struct Geometry {
 }
 
 impl Geometry {
-    pub fn new(device: &wgpu::Device, operation: &dyn Object) -> Self {
-        let tri_mesh = operation.tri_mesh();
-
+    pub fn new(device: &wgpu::Device, tri_mesh: &TriMesh) -> Self {
         let mut indices = Vec::new();
         let mut vertices = Vec::new();
 
diff --git a/experiments/2025-03-18/src/render/renderer.rs b/experiments/2025-03-18/src/render/renderer.rs
index 60a14f257..aa0775d1d 100644
--- a/experiments/2025-03-18/src/render/renderer.rs
+++ b/experiments/2025-03-18/src/render/renderer.rs
@@ -3,7 +3,7 @@ use std::sync::Arc;
 use anyhow::anyhow;
 use winit::window::Window;
 
-use crate::view::OperationView;
+use crate::{object::Object, view::OperationView};
 
 use super::{geometry::Geometry, pipeline::Pipeline};
 
@@ -79,7 +79,8 @@ impl Renderer {
     pub fn render(&mut self, operations: &OperationView) -> anyhow::Result<()> {
         let selected_operation = operations.selected();
 
-        let geometry = Geometry::new(&self.device, selected_operation);
+        let geometry =
+            Geometry::new(&self.device, &selected_operation.tri_mesh());
 
         let mut encoder = self
             .device