diff --git a/flake.nix b/flake.nix
index cc8c3d4..7b9c8f4 100644
--- a/flake.nix
+++ b/flake.nix
@@ -9,7 +9,38 @@
     let
       pkgs = import nixpkgs { system = "x86_64-linux"; };
 
-      build = { variant }:
+      build_copper_plate = { }:
+        let
+          copper_plate = pkgs.stdenv.mkDerivation {
+            name = "production-files";
+            src = ./kirdy_LD_adapter_copper_plate;
+
+            nativeBuildInputs = [ pkgs.kicad ];
+
+            PCB = "kirdy_LD_adapter_copper_plate.kicad_pcb";
+
+            buildPhase = ''
+              # kicad-cli requires the use of $HOME
+              export HOME=$(mktemp -d tmp.XXXX)
+
+              # Get Revision Number from the Title Block in KiCAD PCB
+              REV=$(cat $PCB | grep rev | cut -d'"' -f 2)
+              PREFIX=kirdy_LD_adapter_copper_plate_$REV
+
+              export KICAD7_3DMODEL_DIR=${pkgs.kicad.libraries.packages3d}/share/kicad/3dmodels
+              kicad-cli pcb export step $PCB --subst-models --force -o $PREFIX.step
+            '';
+
+            installPhase = ''
+              mkdir -p $out 
+
+              cp $PREFIX.step $out/$PREFIX.step
+            '';
+
+          };
+        in rec { "LD_adapter_copper_plate_step" = copper_plate; };
+
+      build_PCB = { variant }:
         let
           bom = pkgs.stdenv.mkDerivation {
             name = "bom";
@@ -162,32 +193,6 @@
               ln -s ${gerber_and_drill}/$(ls ${gerber_and_drill} | grep "drill") $out
             '';
 
-          copper_plate_production_files = pkgs.stdenv.mkDerivation {
-            name = "production-files";
-            src = ./kirdy_LD_adapter_copper_plate;
-
-            nativeBuildInputs = [ pkgs.kicad pkgs.zip pkgs.python3 ];
-
-            PCB = "kirdy_LD_adapter_copper_plate.kicad_pcb";
-
-            buildPhase = ''
-              # kicad-cli requires the use of $HOME
-              export HOME=$(mktemp -d tmp.XXXX)
-
-              # Get Revision Number from the Title Block in KiCAD PCB
-              REV=$(cat $PCB | grep rev | cut -d'"' -f 2)
-              PREFIX=kirdy_LD_adapter_copper_plate_$REV
-
-              export KICAD7_3DMODEL_DIR=${pkgs.kicad.libraries.packages3d}/share/kicad/3dmodels
-              kicad-cli pcb export step $PCB --subst-models --force -o $PREFIX.step
-            '';
-
-            installPhase = ''
-              mkdir -p $out 
-
-              cp $PREFIX.step $out/$PREFIX.step
-            '';
-          };
         in {
           "LD_adapter_${variant}_step" = step;
           "LD_adapter_${variant}_gerber_and_drill" = gerber_and_drill;
@@ -195,14 +200,14 @@
           "LD_adapter_${variant}_pos" = pos;
           "LD_adapter_${variant}_pdf" = pdf;
           "LD_adapter_${variant}_all_prod_files" = all_prod_files;
-          "LD_adapter_copper_plate" = copper_plate_production_files;
         };
 
     in rec {
       formatter.x86_64-linux = nixpkgs.legacyPackages.x86_64-linux.nixfmt;
 
-      packages.x86_64-linux = (build { variant = "type_1"; })
-        // (build { variant = "type_2"; });
+      packages.x86_64-linux = (build_PCB { variant = "type_1"; })
+        // (build_PCB { variant = "type_2"; }) 
+        // (build_copper_plate { });
 
       devShells.x86_64-linux.default =
         let pkgs = nixpkgs.legacyPackages.x86_64-linux;