diff --git a/examples/extrude_algebra.py b/examples/extrude_algebra.py
index 0bebd4b..a363f8a 100644
--- a/examples/extrude_algebra.py
+++ b/examples/extrude_algebra.py
@@ -31,7 +31,7 @@ ex26_target = ex26_target + mirror(ex26_target, about=Plane.XZ)
 
 rect = Rectangle(rad, rev)
 
-ex26 = extrude(rect, until=Until.LAST, target=ex26_target)
+ex26 = extrude(rect, until=Until.LAST, target=ex26_target, clean=False)
 
 # Extrude next
 circle = Pos(0, rev) * Circle(rad)
@@ -46,7 +46,7 @@ extrusion27 = extrude(rect, until=Until.NEXT, target=ex27, mode=Mode.ADD)
 # Extrude next both
 ex28 = Rot(0, 90, 0) * Torus(25, 5)
 rect = Rectangle(rad, rev)
-extrusion28 = extrude(rect, until=Until.NEXT, target=ex28, both=True)
+extrusion28 = extrude(rect, until=Until.NEXT, target=ex28, both=True, clean=False)
 
 if "show_object" in locals():
     show_object(simple.translate((-15, 0, 0)), name="simple pending extrude")