diff --git a/.gitmodules b/.gitmodules
index b81a145..8284401 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,6 @@
 [submodule "scad/sprocketed_roller"]
 	path = scad/sprocketed_roller
 	url = https://git.sixteenmillimeter.com/modules/sprocketed_roller.git
+[submodule "scad/MCAD"]
+	path = scad/MCAD
+	url = https://github.com/openscad/MCAD.git
diff --git a/app/data/cfg.json b/app/data/cfg.json
index 3d6ea69..9cf0445 100644
--- a/app/data/cfg.json
+++ b/app/data/cfg.json
@@ -1,5 +1,5 @@
 {
-  "version": "1.8.32",
+  "version": "1.8.33",
   "ext_port": 1111,
   "profiles": {
     "mcopy": {
diff --git a/app/package-lock.json b/app/package-lock.json
index 210c5ec..359c5e8 100644
--- a/app/package-lock.json
+++ b/app/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "mcopy-app",
-  "version": "1.8.32",
+  "version": "1.8.33",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
diff --git a/app/package.json b/app/package.json
index 1dbad69..868441c 100644
--- a/app/package.json
+++ b/app/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mcopy-app",
-  "version": "1.8.32",
+  "version": "1.8.33",
   "description": "GUI for the mcopy small gauge film optical printer platform",
   "main": "main.js",
   "scripts": {
diff --git a/data/cfg.json b/data/cfg.json
index 3d6ea69..9cf0445 100644
--- a/data/cfg.json
+++ b/data/cfg.json
@@ -1,5 +1,5 @@
 {
-  "version": "1.8.32",
+  "version": "1.8.33",
   "ext_port": 1111,
   "profiles": {
     "mcopy": {
diff --git a/package-lock.json b/package-lock.json
index ee4191b..fb03f71 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "mcopy",
-  "version": "1.8.32",
+  "version": "1.8.33",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "mcopy",
-      "version": "1.8.32",
+      "version": "1.8.33",
       "license": "MIT",
       "dependencies": {
         "arduino": "file:app/lib/arduino",
diff --git a/package.json b/package.json
index a21187c..acd99e9 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mcopy",
-  "version": "1.8.32",
+  "version": "1.8.33",
   "description": "Small gauge film optical printer platform",
   "main": "build.js",
   "directories": {
diff --git a/processing/mcopy/cfg.json b/processing/mcopy/cfg.json
index 3d6ea69..9cf0445 100644
--- a/processing/mcopy/cfg.json
+++ b/processing/mcopy/cfg.json
@@ -1,5 +1,5 @@
 {
-  "version": "1.8.32",
+  "version": "1.8.33",
   "ext_port": 1111,
   "profiles": {
     "mcopy": {
diff --git a/scad/MCAD b/scad/MCAD
new file mode 160000
index 0000000..bd0a7ba
--- /dev/null
+++ b/scad/MCAD
@@ -0,0 +1 @@
+Subproject commit bd0a7ba3f042bfbced5ca1894b236cea08904e26