diff --git a/OpenNest.Core/IPostProcessorNestAware.cs b/OpenNest.Core/IPostProcessorNestAware.cs
new file mode 100644
index 0000000..1670311
--- /dev/null
+++ b/OpenNest.Core/IPostProcessorNestAware.cs
@@ -0,0 +1,7 @@
+namespace OpenNest
+{
+    public interface IPostProcessorNestAware
+    {
+        void PrepareForNest(Nest nest);
+    }
+}
diff --git a/OpenNest.Posts.Cincinnati/CincinnatiPostConfig.cs b/OpenNest.Posts.Cincinnati/CincinnatiPostConfig.cs
index d8ecf21..fa1783b 100644
--- a/OpenNest.Posts.Cincinnati/CincinnatiPostConfig.cs
+++ b/OpenNest.Posts.Cincinnati/CincinnatiPostConfig.cs
@@ -1,5 +1,7 @@
+using System;
 using System.Collections.Generic;
 using System.ComponentModel;
+using System.Linq;
 
 namespace OpenNest.Posts.Cincinnati
 {
@@ -277,6 +279,24 @@ namespace OpenNest.Posts.Cincinnati
         [DisplayName("Etch Libraries")]
         [Description("Gas-to-library mapping for etch operations.")]
         public List<EtchLibraryEntry> EtchLibraries { get; set; } = new();
+
+        [Category("B. Libraries")]
+        [DisplayName("Selected Library")]
+        [Description("Overrides Material/Thickness/Gas auto-resolution. Pick an existing entry from Material Libraries, or leave blank to auto-resolve.")]
+        [TypeConverter(typeof(MaterialLibraryNameConverter))]
+        public string SelectedLibrary { get; set; } = "";
+
+        public string FindBestLibrary(string materialName, double thickness)
+        {
+            if (MaterialLibraries == null || string.IsNullOrEmpty(materialName))
+                return "";
+
+            return MaterialLibraries
+                .Where(e => string.Equals(e.Material, materialName, StringComparison.OrdinalIgnoreCase))
+                .OrderBy(e => System.Math.Abs(e.Thickness - thickness))
+                .Select(e => e.Library)
+                .FirstOrDefault() ?? "";
+        }
     }
 
     public class MaterialLibraryEntry
diff --git a/OpenNest.Posts.Cincinnati/CincinnatiPostProcessor.cs b/OpenNest.Posts.Cincinnati/CincinnatiPostProcessor.cs
index 0567c28..c899ae6 100644
--- a/OpenNest.Posts.Cincinnati/CincinnatiPostProcessor.cs
+++ b/OpenNest.Posts.Cincinnati/CincinnatiPostProcessor.cs
@@ -9,7 +9,7 @@ using OpenNest.CNC;
 
 namespace OpenNest.Posts.Cincinnati
 {
-    public sealed class CincinnatiPostProcessor : IConfigurablePostProcessor, IMaterialProvidingPostProcessor
+    public sealed class CincinnatiPostProcessor : IConfigurablePostProcessor, IPostProcessorNestAware, IMaterialProvidingPostProcessor
     {
         private static readonly JsonSerializerOptions JsonOptions = new()
         {
@@ -35,6 +35,13 @@ namespace OpenNest.Posts.Cincinnati
                 .Where(s => !string.IsNullOrWhiteSpace(s));
         }
 
+        public void PrepareForNest(Nest nest)
+        {
+            var materialName = nest?.Material?.Name ?? "";
+            var thickness = nest?.Thickness ?? 0.0;
+            Config.SelectedLibrary = Config.FindBestLibrary(materialName, thickness);
+        }
+
         public CincinnatiPostProcessor()
         {
             var configPath = GetConfigPath();
@@ -138,7 +145,8 @@ namespace OpenNest.Posts.Cincinnati
             // Part sub-programs (if enabled)
             if (subprogramEntries != null)
             {
-                var partSubWriter = new CincinnatiPartSubprogramWriter(Config);
+                var partSubWriter = new CincinnatiPartSubprogramWriter(Config,
+                    holeMapping.Count > 0 ? holeMapping : null);
                 var sheetDiagonal = firstPlate != null
                     ? System.Math.Sqrt(firstPlate.Size.Width * firstPlate.Size.Width
                         + firstPlate.Size.Length * firstPlate.Size.Length)
diff --git a/OpenNest.Posts.Cincinnati/MaterialLibraryNameConverter.cs b/OpenNest.Posts.Cincinnati/MaterialLibraryNameConverter.cs
new file mode 100644
index 0000000..1013b13
--- /dev/null
+++ b/OpenNest.Posts.Cincinnati/MaterialLibraryNameConverter.cs
@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+
+namespace OpenNest.Posts.Cincinnati
+{
+    public sealed class MaterialLibraryNameConverter : StringConverter
+    {
+        public override bool GetStandardValuesSupported(ITypeDescriptorContext context) => true;
+
+        public override bool GetStandardValuesExclusive(ITypeDescriptorContext context) => false;
+
+        public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
+        {
+            var config = context?.Instance as CincinnatiPostConfig;
+            var names = new List<string> { "" };
+
+            if (config?.MaterialLibraries != null)
+            {
+                names.AddRange(config.MaterialLibraries
+                    .Select(e => e.Library)
+                    .Where(s => !string.IsNullOrWhiteSpace(s))
+                    .Distinct(StringComparer.OrdinalIgnoreCase)
+                    .OrderBy(s => s, StringComparer.OrdinalIgnoreCase));
+            }
+
+            return new StandardValuesCollection(names);
+        }
+    }
+}
diff --git a/OpenNest.Posts.Cincinnati/MaterialLibraryResolver.cs b/OpenNest.Posts.Cincinnati/MaterialLibraryResolver.cs
index a42c2c4..82ee863 100644
--- a/OpenNest.Posts.Cincinnati/MaterialLibraryResolver.cs
+++ b/OpenNest.Posts.Cincinnati/MaterialLibraryResolver.cs
@@ -10,15 +10,20 @@ public sealed class MaterialLibraryResolver
 
     private readonly List<MaterialLibraryEntry> _materialLibraries;
     private readonly List<EtchLibraryEntry> _etchLibraries;
+    private readonly string _selectedLibrary;
 
     public MaterialLibraryResolver(CincinnatiPostConfig config)
     {
         _materialLibraries = config.MaterialLibraries ?? new List<MaterialLibraryEntry>();
         _etchLibraries = config.EtchLibraries ?? new List<EtchLibraryEntry>();
+        _selectedLibrary = config.SelectedLibrary ?? "";
     }
 
     public string ResolveCutLibrary(string materialName, double thickness, string gas)
     {
+        if (!string.IsNullOrEmpty(_selectedLibrary))
+            return EnsureLibExtension(_selectedLibrary);
+
         var entry = _materialLibraries.FirstOrDefault(e =>
             string.Equals(e.Material, materialName, StringComparison.OrdinalIgnoreCase) &&
             System.Math.Abs(e.Thickness - thickness) <= ThicknessTolerance &&
diff --git a/OpenNest.Posts.Cincinnati/OpenNest.Posts.Cincinnati.csproj b/OpenNest.Posts.Cincinnati/OpenNest.Posts.Cincinnati.csproj
index 1b60598..0109553 100644
--- a/OpenNest.Posts.Cincinnati/OpenNest.Posts.Cincinnati.csproj
+++ b/OpenNest.Posts.Cincinnati/OpenNest.Posts.Cincinnati.csproj
@@ -6,11 +6,19 @@
   <ItemGroup>
     <ProjectReference Include="..\OpenNest.Core\OpenNest.Core.csproj" />
   </ItemGroup>
+  <ItemGroup>
+    <None Update="OpenNest.Posts.Cincinnati.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
   <Target Name="CopyToPostsDir" AfterTargets="Build">
     <PropertyGroup>
       <PostsDir>..\OpenNest\bin\$(Configuration)\$(TargetFramework)\Posts\</PostsDir>
+      <ConfigJson>$(MSBuildProjectDirectory)\OpenNest.Posts.Cincinnati.json</ConfigJson>
+      <DeployedConfigJson>$(PostsDir)OpenNest.Posts.Cincinnati.json</DeployedConfigJson>
     </PropertyGroup>
     <MakeDir Directories="$(PostsDir)" />
     <Copy SourceFiles="$(TargetPath)" DestinationFolder="$(PostsDir)" SkipUnchangedFiles="true" ContinueOnError="true" />
+    <Copy SourceFiles="$(ConfigJson)" DestinationFolder="$(PostsDir)" SkipUnchangedFiles="true" ContinueOnError="true" Condition="!Exists('$(DeployedConfigJson)')" />
   </Target>
 </Project>
diff --git a/OpenNest.Posts.Cincinnati/OpenNest.Posts.Cincinnati.json b/OpenNest.Posts.Cincinnati/OpenNest.Posts.Cincinnati.json
new file mode 100644
index 0000000..692d998
--- /dev/null
+++ b/OpenNest.Posts.Cincinnati/OpenNest.Posts.Cincinnati.json
@@ -0,0 +1,163 @@
+{
+  "ConfigurationName": "CL940",
+  "PostedUnits": "Inches",
+  "PostedAccuracy": 4,
+  "UseLineNumbers": true,
+  "FeatureLineNumberStart": 1,
+  "UseSheetSubprograms": true,
+  "SheetSubprogramStart": 101,
+  "UsePartSubprograms": false,
+  "PartSubprogramStart": 200,
+  "VariableDeclarationSubprogram": 100,
+  "CoordModeBetweenParts": "G92",
+  "ProcessParameterMode": "LibraryFile",
+  "DefaultAssistGas": "O2",
+  "DefaultEtchGas": "N2",
+  "UseExactStopMode": false,
+  "UseSpeedGas": false,
+  "UseAntiDive": true,
+  "UseSmartRapids": false,
+  "KerfCompensation": "ControllerSide",
+  "DefaultKerfSide": "Left",
+  "InteriorM47": "Always",
+  "ExteriorM47": "Always",
+  "M47OverrideDistanceThreshold": null,
+  "SafetyHeadraiseDistance": 2000,
+  "PalletExchange": "EndOfSheet",
+  "LeadInFeedratePercent": 0.5,
+  "LeadInArcLine2FeedratePercent": 0.5,
+  "LeadOutFeedratePercent": 0.5,
+  "CircleFeedrateMultiplier": 0.8,
+  "ArcFeedrate": "None",
+  "ArcFeedrateRanges": [
+    { "MaxRadius": 0.125, "FeedratePercent": 0.25, "VariableNumber": 123 },
+    { "MaxRadius": 0.75, "FeedratePercent": 0.5, "VariableNumber": 124 },
+    { "MaxRadius": 4.5, "FeedratePercent": 0.8, "VariableNumber": 125 }
+  ],
+  "UserVariableStart": 200,
+  "SheetWidthVariable": 110,
+  "SheetLengthVariable": 111,
+  "MaterialLibraries": [
+    { "Material": "Aluminum", "Thickness": 0.032, "Gas": "AIR", "Library": "AL032AIR" },
+    { "Material": "Aluminum", "Thickness": 0.032, "Gas": "N2", "Library": "AL032N2" },
+    { "Material": "Aluminum", "Thickness": 0.032, "Gas": "O2", "Library": "AL032O2" },
+    { "Material": "Aluminum", "Thickness": 0.050, "Gas": "AIR", "Library": "AL050AIR" },
+    { "Material": "Aluminum", "Thickness": 0.050, "Gas": "N2", "Library": "AL050N2" },
+    { "Material": "Aluminum", "Thickness": 0.050, "Gas": "O2", "Library": "AL050O2" },
+    { "Material": "Aluminum", "Thickness": 0.063, "Gas": "AIR", "Library": "AL063AIR" },
+    { "Material": "Aluminum", "Thickness": 0.063, "Gas": "N2", "Library": "AL063N2" },
+    { "Material": "Aluminum", "Thickness": 0.063, "Gas": "O2", "Library": "AL063O2" },
+    { "Material": "Aluminum", "Thickness": 0.080, "Gas": "AIR", "Library": "AL080AIR" },
+    { "Material": "Aluminum", "Thickness": 0.080, "Gas": "N2", "Library": "AL080N2" },
+    { "Material": "Aluminum", "Thickness": 0.080, "Gas": "O2", "Library": "AL080O2" },
+    { "Material": "Aluminum", "Thickness": 0.090, "Gas": "AIR", "Library": "AL090AIR" },
+    { "Material": "Aluminum", "Thickness": 0.090, "Gas": "N2", "Library": "AL090N2" },
+    { "Material": "Aluminum", "Thickness": 0.090, "Gas": "O2", "Library": "AL090O2" },
+    { "Material": "Aluminum", "Thickness": 0.100, "Gas": "AIR", "Library": "AL100AIR" },
+    { "Material": "Aluminum", "Thickness": 0.100, "Gas": "N2", "Library": "AL100N2" },
+    { "Material": "Aluminum", "Thickness": 0.100, "Gas": "O2", "Library": "AL100O2" },
+    { "Material": "Aluminum", "Thickness": 0.125, "Gas": "AIR", "Library": "AL125AIR" },
+    { "Material": "Aluminum", "Thickness": 0.125, "Gas": "N2", "Library": "AL125N2" },
+    { "Material": "Aluminum", "Thickness": 0.125, "Gas": "O2", "Library": "AL125O2" },
+    { "Material": "Aluminum", "Thickness": 0.190, "Gas": "AIR", "Library": "AL190AIR" },
+    { "Material": "Aluminum", "Thickness": 0.190, "Gas": "N2", "Library": "AL190N2" },
+    { "Material": "Aluminum", "Thickness": 0.190, "Gas": "O2", "Library": "AL190O2" },
+    { "Material": "Aluminum", "Thickness": 0.250, "Gas": "AIR", "Library": "AL250AIR" },
+    { "Material": "Aluminum", "Thickness": 0.250, "Gas": "N2", "Library": "AL250N2" },
+    { "Material": "Aluminum", "Thickness": 0.250, "Gas": "O2", "Library": "AL250O2" },
+    { "Material": "Aluminum", "Thickness": 0.375, "Gas": "AIR", "Library": "AL375AIR" },
+    { "Material": "Aluminum", "Thickness": 0.375, "Gas": "N2", "Library": "AL375N2" },
+    { "Material": "Aluminum", "Thickness": 0.375, "Gas": "O2", "Library": "AL375O2" },
+    { "Material": "Aluminum", "Thickness": 0.500, "Gas": "AIR", "Library": "AL500AIR" },
+    { "Material": "Aluminum", "Thickness": 0.500, "Gas": "N2", "Library": "AL500N2" },
+    { "Material": "Aluminum", "Thickness": 0.500, "Gas": "O2", "Library": "AL500O2" },
+    { "Material": "Aluminum", "Thickness": 0.625, "Gas": "N2", "Library": "AL625N2" },
+    { "Material": "Aluminum", "Thickness": 0.750, "Gas": "AIR", "Library": "AL750AIR" },
+    { "Material": "Aluminum", "Thickness": 0.750, "Gas": "N2", "Library": "AL750N2" },
+    { "Material": "Aluminum", "Thickness": 0.750, "Gas": "O2", "Library": "AL750O2" },
+    { "Material": "Aluminum", "Thickness": 1.000, "Gas": "AIR", "Library": "AL1000AIR" },
+    { "Material": "Aluminum", "Thickness": 1.000, "Gas": "N2", "Library": "AL1000N2" },
+
+    { "Material": "Galvanized Steel", "Thickness": 0.135, "Gas": "N2", "Library": "GALV135N2" },
+    { "Material": "Galvanized Steel", "Thickness": 0.188, "Gas": "N2", "Library": "GALV188N2" },
+
+    { "Material": "Carbon Steel", "Thickness": 0.036, "Gas": "AIR", "Library": "MS036AIR" },
+    { "Material": "Carbon Steel", "Thickness": 0.036, "Gas": "N2", "Library": "MS036N2" },
+    { "Material": "Carbon Steel", "Thickness": 0.048, "Gas": "AIR", "Library": "MS048AIR" },
+    { "Material": "Carbon Steel", "Thickness": 0.048, "Gas": "N2", "Library": "MS048N2" },
+    { "Material": "Carbon Steel", "Thickness": 0.060, "Gas": "AIR", "Library": "MS060AIR" },
+    { "Material": "Carbon Steel", "Thickness": 0.060, "Gas": "N2", "Library": "MS060N2" },
+    { "Material": "Carbon Steel", "Thickness": 0.075, "Gas": "AIR", "Library": "MS075AIR" },
+    { "Material": "Carbon Steel", "Thickness": 0.075, "Gas": "N2", "Library": "MS075N2" },
+    { "Material": "Carbon Steel", "Thickness": 0.075, "Gas": "N2", "Library": "MS075N2FE" },
+    { "Material": "Carbon Steel", "Thickness": 0.090, "Gas": "N2", "Library": "MS090N2" },
+    { "Material": "Carbon Steel", "Thickness": 0.105, "Gas": "AIR", "Library": "MS105AIR" },
+    { "Material": "Carbon Steel", "Thickness": 0.105, "Gas": "N2", "Library": "MS105N2" },
+    { "Material": "Carbon Steel", "Thickness": 0.120, "Gas": "AIR", "Library": "MS120AIR" },
+    { "Material": "Carbon Steel", "Thickness": 0.120, "Gas": "N2", "Library": "MS120N2" },
+    { "Material": "Carbon Steel", "Thickness": 0.120, "Gas": "N2", "Library": "MS120N2FE" },
+    { "Material": "Carbon Steel", "Thickness": 0.135, "Gas": "AIR", "Library": "MS135AIR" },
+    { "Material": "Carbon Steel", "Thickness": 0.135, "Gas": "N2", "Library": "MS135N2" },
+    { "Material": "Carbon Steel", "Thickness": 0.135, "Gas": "N2", "Library": "MS135N2FE" },
+    { "Material": "Carbon Steel", "Thickness": 0.135, "Gas": "N2", "Library": "MS135N2Panel" },
+    { "Material": "Carbon Steel", "Thickness": 0.188, "Gas": "AIR", "Library": "MS188AIR" },
+    { "Material": "Carbon Steel", "Thickness": 0.188, "Gas": "N2", "Library": "MS188N2" },
+    { "Material": "Carbon Steel", "Thickness": 0.188, "Gas": "N2", "Library": "MS188N2FLOORPLATE" },
+    { "Material": "Carbon Steel", "Thickness": 0.188, "Gas": "O2", "Library": "MS188O2" },
+    { "Material": "Carbon Steel", "Thickness": 0.250, "Gas": "AIR", "Library": "MS250AIR" },
+    { "Material": "Carbon Steel", "Thickness": 0.250, "Gas": "N2", "Library": "MS250N2" },
+    { "Material": "Carbon Steel", "Thickness": 0.250, "Gas": "N2", "Library": "MS250N2FLOORPLATE" },
+    { "Material": "Carbon Steel", "Thickness": 0.250, "Gas": "O2", "Library": "MS250O2" },
+    { "Material": "Carbon Steel", "Thickness": 0.313, "Gas": "O2", "Library": "MS313O2" },
+    { "Material": "Carbon Steel", "Thickness": 0.375, "Gas": "O2", "Library": "MS375O2" },
+    { "Material": "Carbon Steel", "Thickness": 0.500, "Gas": "N2", "Library": "MS500N2" },
+    { "Material": "Carbon Steel", "Thickness": 0.500, "Gas": "O2", "Library": "MS500O2" },
+    { "Material": "Carbon Steel", "Thickness": 0.625, "Gas": "O2", "Library": "MS625O2" },
+    { "Material": "Carbon Steel", "Thickness": 0.750, "Gas": "O2", "Library": "MS750O2" },
+    { "Material": "Carbon Steel", "Thickness": 1.000, "Gas": "O2", "Library": "MS1000O2" },
+
+    { "Material": "Stainless Steel", "Thickness": 0.036, "Gas": "AIR", "Library": "SS036AIR" },
+    { "Material": "Stainless Steel", "Thickness": 0.036, "Gas": "N2", "Library": "SS036N2" },
+    { "Material": "Stainless Steel", "Thickness": 0.048, "Gas": "AIR", "Library": "SS048AIR" },
+    { "Material": "Stainless Steel", "Thickness": 0.048, "Gas": "N2", "Library": "SS048N2" },
+    { "Material": "Stainless Steel", "Thickness": 0.060, "Gas": "AIR", "Library": "SS060AIR" },
+    { "Material": "Stainless Steel", "Thickness": 0.060, "Gas": "N2", "Library": "SS060N2" },
+    { "Material": "Stainless Steel", "Thickness": 0.075, "Gas": "AIR", "Library": "SS075AIR" },
+    { "Material": "Stainless Steel", "Thickness": 0.075, "Gas": "N2", "Library": "SS075N2" },
+    { "Material": "Stainless Steel", "Thickness": 0.075, "Gas": "N2", "Library": "SS075N2FE" },
+    { "Material": "Stainless Steel", "Thickness": 0.105, "Gas": "AIR", "Library": "SS105AIR" },
+    { "Material": "Stainless Steel", "Thickness": 0.105, "Gas": "N2", "Library": "SS105N2" },
+    { "Material": "Stainless Steel", "Thickness": 0.105, "Gas": "N2", "Library": "SS105N2FE" },
+    { "Material": "Stainless Steel", "Thickness": 0.120, "Gas": "AIR", "Library": "SS120AIR" },
+    { "Material": "Stainless Steel", "Thickness": 0.120, "Gas": "N2", "Library": "SS120N2" },
+    { "Material": "Stainless Steel", "Thickness": 0.120, "Gas": "N2", "Library": "SS120N2FE" },
+    { "Material": "Stainless Steel", "Thickness": 0.135, "Gas": "AIR", "Library": "SS135AIR" },
+    { "Material": "Stainless Steel", "Thickness": 0.135, "Gas": "N2", "Library": "SS135N2" },
+    { "Material": "Stainless Steel", "Thickness": 0.135, "Gas": "N2", "Library": "SS135N2FE" },
+    { "Material": "Stainless Steel", "Thickness": 0.188, "Gas": "AIR", "Library": "SS188AIR" },
+    { "Material": "Stainless Steel", "Thickness": 0.188, "Gas": "N2", "Library": "SS188N2" },
+    { "Material": "Stainless Steel", "Thickness": 0.250, "Gas": "AIR", "Library": "SS250AIR" },
+    { "Material": "Stainless Steel", "Thickness": 0.250, "Gas": "N2", "Library": "SS250N2" },
+    { "Material": "Stainless Steel", "Thickness": 0.313, "Gas": "N2", "Library": "SS313N2" },
+    { "Material": "Stainless Steel", "Thickness": 0.375, "Gas": "AIR", "Library": "SS375AIR" },
+    { "Material": "Stainless Steel", "Thickness": 0.375, "Gas": "N2", "Library": "SS375N2" },
+    { "Material": "Stainless Steel", "Thickness": 0.500, "Gas": "AIR", "Library": "SS500AIR" },
+    { "Material": "Stainless Steel", "Thickness": 0.500, "Gas": "N2", "Library": "SS500N2" },
+    { "Material": "Stainless Steel", "Thickness": 0.625, "Gas": "N2", "Library": "SS625N2" },
+    { "Material": "Stainless Steel", "Thickness": 0.750, "Gas": "AIR", "Library": "SS750AIR" },
+    { "Material": "Stainless Steel", "Thickness": 0.750, "Gas": "N2", "Library": "SS750N2" },
+    { "Material": "Stainless Steel", "Thickness": 1.000, "Gas": "AIR", "Library": "SS1000AIR" },
+    { "Material": "Stainless Steel", "Thickness": 1.000, "Gas": "N2", "Library": "SS1000N2" },
+
+    { "Material": "Phenolic", "Thickness": 0.0, "Gas": "", "Library": "Phenolic" },
+    { "Material": "Gasket", "Thickness": 0.250, "Gas": "N2", "Library": "GASKET250N2" }
+  ],
+  "EtchLibraries": [
+    { "Gas": "AIR", "Library": "EtchAIR" },
+    { "Gas": "N2", "Library": "EtchN2" },
+    { "Gas": "N2", "Library": "EtchN2_fast" },
+    { "Gas": "N2", "Library": "Etchn2_no_mark_pvc" },
+    { "Gas": "O2", "Library": "EtchO2" },
+    { "Gas": "O2", "Library": "ETCHO2FINE" }
+  ]
+}