From 2039ff64a7ad83bd64a21adc844b61af18df4bda Mon Sep 17 00:00:00 2001
From: James Keal <j@keal.au>
Date: Sat, 3 Jan 2026 14:38:45 +1030
Subject: [PATCH] Update external.rst

---
 docs/external.rst | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/docs/external.rst b/docs/external.rst
index 85f7723..03f0645 100644
--- a/docs/external.rst
+++ b/docs/external.rst
@@ -115,6 +115,13 @@ A gear generation framework that allows easy creation of a wide range of gears a
 
 See `gggears <https://github.com/GarryBGoode/gggears>`_
 
+bd_vslot
+=================
+
+A library of V-Slot linear rail components, including V-Slot rails.
+
+See: `bd_vslot <https://bd-vslot.readthedocs.io>`_
+
 *****
 Tools
 *****