diff --git a/default.FCStd b/default.FCStd
index 8c35daa..6ff7605 100644
Binary files a/default.FCStd and b/default.FCStd differ
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..58a71a6
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,164 @@
+{
+  "nodes": {
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib"
+      },
+      "locked": {
+        "lastModified": 1706830856,
+        "narHash": "sha256-a0NYyp+h9hlb7ddVz4LUn1vT/PLwqfrWYcHMvFB1xYg=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "b253292d9c0a5ead9bc98c4e9a26c6312e27d69f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "flake-root": {
+      "locked": {
+        "lastModified": 1692742795,
+        "narHash": "sha256-f+Y0YhVCIJ06LemO+3Xx00lIcqQxSKJHXT/yk1RTKxw=",
+        "owner": "srid",
+        "repo": "flake-root",
+        "rev": "d9a70d9c7a5fd7f3258ccf48da9335e9b47c3937",
+        "type": "github"
+      },
+      "original": {
+        "owner": "srid",
+        "repo": "flake-root",
+        "type": "github"
+      }
+    },
+    "mission-control": {
+      "locked": {
+        "lastModified": 1707501043,
+        "narHash": "sha256-S3e8pfjXT335TuacspMyPbMnRX5c+qhvN4Jbm/R+3HM=",
+        "owner": "Platonic-Systems",
+        "repo": "mission-control",
+        "rev": "c275dd195776b1b9735790231d874a3c5a7ee779",
+        "type": "github"
+      },
+      "original": {
+        "owner": "Platonic-Systems",
+        "repo": "mission-control",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1707347730,
+        "narHash": "sha256-0etC/exQIaqC9vliKhc3eZE2Mm2wgLa0tj93ZF/egvM=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "6832d0d99649db3d65a0e15fa51471537b2c56a6",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-23.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-legacy": {
+      "locked": {
+        "lastModified": 1704290814,
+        "narHash": "sha256-LWvKHp7kGxk/GEtlrGYV68qIvPHkU9iToomNFGagixU=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "70bdadeb94ffc8806c0570eb5c2695ad29f0e421",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-23.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-lib": {
+      "locked": {
+        "dir": "lib",
+        "lastModified": 1706550542,
+        "narHash": "sha256-UcsnCG6wx++23yeER4Hg18CXWbgNpqNXcHIo5/1Y+hc=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "97b17f32362e475016f942bbdfda4a4a72a8a652",
+        "type": "github"
+      },
+      "original": {
+        "dir": "lib",
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-master": {
+      "locked": {
+        "lastModified": 1707583374,
+        "narHash": "sha256-EAa97dBfVyjCn+HgLidQ4OoHXuQ+RuyWtN2L1rJEd1k=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "b5deef5f5e1a9fc70cace9dba6aa9a99a81fc605",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "master",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-staging": {
+      "locked": {
+        "lastModified": 1707574042,
+        "narHash": "sha256-49WU2DTNLLswS7w07IYEkQ/RTXQ3W0sg222Jli8ybEQ=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "8c2f0e26179a75cc8d4fe2ac1fc503d504572642",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "staging",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-unstable": {
+      "locked": {
+        "lastModified": 1707268954,
+        "narHash": "sha256-2en1kvde3cJVc3ZnTy8QeD2oKcseLFjYPLKhIGDanQ0=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "f8e2ebd66d097614d51a56a755450d4ae1632df1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-parts": "flake-parts",
+        "flake-root": "flake-root",
+        "mission-control": "mission-control",
+        "nixpkgs": "nixpkgs",
+        "nixpkgs-legacy": "nixpkgs-legacy",
+        "nixpkgs-master": "nixpkgs-master",
+        "nixpkgs-staging": "nixpkgs-staging",
+        "nixpkgs-unstable": "nixpkgs-unstable"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
index 7326ca6..e5cd3cc 100644
--- a/flake.nix
+++ b/flake.nix
@@ -9,7 +9,12 @@
 		nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
 		# nixpkgs-unstable-small.url = "github:nixos/nixpkgs/nixos-unstable";
 		nixpkgs-master.url = "github:nixos/nixpkgs/master";
-		nixpkgs-staging.url = "github:nixos/nixpkgs/staging";
+    nixpkgs-staging.url = "github:nixos/nixpkgs/staging";
+
+    # Principles
+    flake-parts.url = "github:hercules-ci/flake-parts";
+    mission-control.url = "github:Platonic-Systems/mission-control";
+    flake-root.url = "github:srid/flake-root";
 	};
 
 	outputs = inputs @ { self, ... }:
diff --git a/img/cnc.png b/img/cnc.png
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diff --git a/img/introduction.png b/img/introduction.png
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diff --git a/parts/motors/ballscrew_holder/default.FCStd b/parts/motors/ballscrew_holder/default.FCStd
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index b8a8a8b..0000000
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diff --git a/parts/portal.FCStd b/parts/portal.FCStd
index 75db96a..b3e1d59 100644
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diff --git a/parts/rails.FCStd b/parts/rails.FCStd
index 9e16420..a96c7cc 100644
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