diff --git a/src/rbx.rs b/src/rbx.rs
index 4086555..ae15c50 100644
--- a/src/rbx.rs
+++ b/src/rbx.rs
@@ -750,13 +750,18 @@ impl PartialMap1{
 		let mut wormhole_id_to_out_model=HashMap::new();
 
 		//decode roblox meshes
-		//generate mesh_id map based on meshes that failed to load
-		let mut meshes=meshpart_meshes.into_iter().flat_map(|(old_mesh_id,roblox_mesh_bytes)|{
+		//generate mesh_id_map based on meshes that failed to load
+		let (meshes,mesh_id_map):(Vec<model::Mesh>,HashMap<model::MeshId,model::MeshId>)=
+		meshpart_meshes.into_iter().flat_map(|(old_mesh_id,roblox_mesh_bytes)|
 			Ok((old_mesh_id,crate::mesh::convert(roblox_mesh_bytes)?))
-		}).collect();
+		).enumerate().map(|(new_mesh_id,(old_mesh_id,mesh))|
+			(mesh,(old_mesh_id,model::MeshId::new(new_mesh_id as u32)))
+		).unzip();
 		//now that the meshes are loaded, these models can be generated
 		let models_owned_attributes=self.deferred_models_deferred_attributes.into_iter().map(|deferred_model_deferred_attributes|{
-			let render=deferred_model_deferred_attributes.render;//what does this do?
+			let render=deferred_model_deferred_attributes.render;
+			//meshes need to be cloned with a new id when they are reused with a new render_id
+			//insert into primitive_meshes
 			ModelDeferredAttributes{
 				mesh:deferred_model_deferred_attributes.model.mesh,
 				deferred_attributes:deferred_model_deferred_attributes.model.deferred_attributes,