diff --git a/scad/common b/scad/common
index 53f4dd4..b499c28 160000
--- a/scad/common
+++ b/scad/common
@@ -1 +1 @@
-Subproject commit 53f4dd4a2d6dd038c1beb97f8ae721ec5905a43b
+Subproject commit b499c2810117b5ca57014d5cb4219cf68b4c5c0f
diff --git a/scad/sprocketed_roller b/scad/sprocketed_roller
index d94c021..4482a47 160000
--- a/scad/sprocketed_roller
+++ b/scad/sprocketed_roller
@@ -1 +1 @@
-Subproject commit d94c0212e9ba3237d5c107f7a95a78935c4f3b87
+Subproject commit 4482a471bb357e93e9cabe9efaecba0370a3a0bd
diff --git a/build.sh b/scripts/scad.sh
similarity index 100%
rename from build.sh
rename to scripts/scad.sh
diff --git a/scripts/submodules.sh b/scripts/submodules.sh
new file mode 100644
index 0000000..ebd9bf0
--- /dev/null
+++ b/scripts/submodules.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+
+echo "Updating all git submodules"
+
+git submodule update --recursive scad/common
+git submodule update --recursive scad/takeup
+git submodule update --recursive scad/sprocketed_roller
\ No newline at end of file