diff --git a/sphinxcontrib/cadquery/cq_core.py b/sphinxcontrib/cadquery/cq_core.py
index d8ec995..fc84ab4 100644
--- a/sphinxcontrib/cadquery/cq_core.py
+++ b/sphinxcontrib/cadquery/cq_core.py
@@ -49,7 +49,7 @@ def run(self) -> list[Any]:
         script_source = "\n".join(self.content)
 
         try:
-            result = self._cqgi_parse(script_source)
+            result = self.cqgi_parse(script_source)
         except Exception as err:
             message = f"CQGI error in {self.name} directive: {err}."
             p = nodes.paragraph("", "", nodes.Text(message))
@@ -100,7 +100,7 @@ def run(self) -> list[Any]:
         script_source = self._script_source()
 
         try:
-            result = self._cqgi_parse(script_source)
+            result = self.cqgi_parse(script_source)
         except Exception as err:
             message = f"CQGI error in {self.name} directive: {err}."
             p = nodes.paragraph("", "", nodes.Text(message))
diff --git a/sphinxcontrib/cadquery/cqgi.py b/sphinxcontrib/cadquery/cqgi.py
index 3fe82dc..30a2e7f 100644
--- a/sphinxcontrib/cadquery/cqgi.py
+++ b/sphinxcontrib/cadquery/cqgi.py
@@ -14,7 +14,7 @@ class Cqgi:
     """Execute script source using CQGI."""
 
     @staticmethod
-    def _cqgi_parse(script_source: str) -> BuildResult:
+    def cqgi_parse(script_source: str) -> BuildResult:
         """Execute script source using CQGI."""
 
         result = cqgi_parse(script_source).build()
diff --git a/sphinxcontrib/cadquery/domain.py b/sphinxcontrib/cadquery/domain.py
index 51827e8..d488ac8 100644
--- a/sphinxcontrib/cadquery/domain.py
+++ b/sphinxcontrib/cadquery/domain.py
@@ -98,7 +98,7 @@ def export_svg(source: str, select: str) -> str:
 
     try:
         parser = Cqgi()
-        result = parser._cqgi_parse(source)
+        result = parser.cqgi_parse(source)
     except Exception as err:
         raise err
 
@@ -384,7 +384,7 @@ def vtk_container_node(self, source: str, height: str):
         """VTK.js model container."""
 
         try:
-            result = self._cqgi_parse(source)
+            result = self.cqgi_parse(source)
         except Exception as err:
             error_text = f"CQGI error in {self.name} directive: "
             detail_text = f"{err}."