diff --git a/crates/fj-kernel/src/algorithms/transform/curve.rs b/crates/fj-kernel/src/algorithms/transform/curve.rs
index 351f1e689..a89192b7f 100644
--- a/crates/fj-kernel/src/algorithms/transform/curve.rs
+++ b/crates/fj-kernel/src/algorithms/transform/curve.rs
@@ -42,8 +42,7 @@ impl TransformObject for PartialCurve {
         Ok(PartialCurve {
             path: self.path,
             surface,
-            ..Default::default()
-        }
-        .with_global_form(global_form))
+            global_form,
+        })
     }
 }
diff --git a/crates/fj-kernel/src/builder/edge.rs b/crates/fj-kernel/src/builder/edge.rs
index a1cf231f6..1c6abd920 100644
--- a/crates/fj-kernel/src/builder/edge.rs
+++ b/crates/fj-kernel/src/builder/edge.rs
@@ -68,11 +68,9 @@ impl HalfEdgeBuilder for PartialHalfEdge {
         radius: impl Into<Scalar>,
         objects: &Objects,
     ) -> Result<Self, ValidationError> {
-        let curve = self
-            .curve()
-            .into_partial()
-            .with_global_form(Some(self.extract_global_curve()))
-            .update_as_circle_from_radius(radius);
+        let mut curve = self.curve().into_partial();
+        curve.global_form = Some(self.extract_global_curve());
+        let curve = curve.update_as_circle_from_radius(radius);
 
         let path = curve.path.expect("Expected path that was just created");
 
@@ -143,9 +141,9 @@ impl HalfEdgeBuilder for PartialHalfEdge {
 
         let curve = PartialCurve {
             surface: Some(surface),
+            global_form: Some(self.extract_global_curve()),
             ..Default::default()
         }
-        .with_global_form(Some(self.extract_global_curve()))
         .update_as_line_from_points(points);
 
         let [back, front] = {
diff --git a/crates/fj-kernel/src/builder/shell.rs b/crates/fj-kernel/src/builder/shell.rs
index bee310e32..fcd8a61f3 100644
--- a/crates/fj-kernel/src/builder/shell.rs
+++ b/crates/fj-kernel/src/builder/shell.rs
@@ -9,10 +9,10 @@ use crate::{
     builder::{FaceBuilder, HalfEdgeBuilder},
     insert::Insert,
     objects::{
-        Curve, Cycle, Face, FaceSet, HalfEdge, Objects, Shell, Surface,
-        SurfaceVertex, Vertex,
+        Cycle, Face, FaceSet, HalfEdge, Objects, Shell, Surface, SurfaceVertex,
+        Vertex,
     },
-    partial::HasPartial,
+    partial::{HasPartial, PartialCurve},
     storage::Handle,
 };
 
@@ -152,9 +152,16 @@ impl<'a> ShellBuilder<'a> {
                             .with_surface(Some(surface.clone()))
                             .with_global_form(Some(from.global_form().clone()));
 
-                        let curve = Curve::partial().with_global_form(Some(
-                            side_up_prev.curve().global_form().clone(),
-                        ));
+                        let curve = PartialCurve {
+                            global_form: Some(
+                                side_up_prev
+                                    .curve()
+                                    .global_form()
+                                    .clone()
+                                    .into(),
+                            ),
+                            ..Default::default()
+                        };
 
                         HalfEdge::partial()
                             .with_curve(curve)
diff --git a/crates/fj-kernel/src/partial/objects/curve.rs b/crates/fj-kernel/src/partial/objects/curve.rs
index 846438a8a..10ba14dee 100644
--- a/crates/fj-kernel/src/partial/objects/curve.rs
+++ b/crates/fj-kernel/src/partial/objects/curve.rs
@@ -22,17 +22,6 @@ pub struct PartialCurve {
 }
 
 impl PartialCurve {
-    /// Provide a global form for the partial curve
-    pub fn with_global_form(
-        mut self,
-        global_form: Option<impl Into<MaybePartial<GlobalCurve>>>,
-    ) -> Self {
-        if let Some(global_form) = global_form {
-            self.global_form = Some(global_form.into());
-        }
-        self
-    }
-
     /// Build a full [`Curve`] from the partial curve
     pub fn build(self, objects: &Objects) -> Result<Curve, ValidationError> {
         let path = self.path.expect("Can't build `Curve` without path");