diff --git a/OpenNest.Engine/PlateProcessor.cs b/OpenNest.Engine/PlateProcessor.cs
new file mode 100644
index 0000000..9601933
--- /dev/null
+++ b/OpenNest.Engine/PlateProcessor.cs
@@ -0,0 +1,120 @@
+using System.Collections.Generic;
+using System.Linq;
+using OpenNest.CNC;
+using OpenNest.CNC.CuttingStrategy;
+using OpenNest.Engine.RapidPlanning;
+using OpenNest.Engine.Sequencing;
+using OpenNest.Geometry;
+
+namespace OpenNest.Engine
+{
+    public class PlateProcessor
+    {
+        public IPartSequencer Sequencer { get; set; }
+        public ContourCuttingStrategy CuttingStrategy { get; set; }
+        public IRapidPlanner RapidPlanner { get; set; }
+
+        public PlateResult Process(Plate plate)
+        {
+            var sequenced = Sequencer.Sequence(plate.Parts.ToList(), plate);
+            var results = new List<ProcessedPart>(sequenced.Count);
+            var cutAreas = new List<Shape>();
+            var currentPoint = PlateHelper.GetExitPoint(plate);
+
+            foreach (var sp in sequenced)
+            {
+                var part = sp.Part;
+
+                // Compute approach point in part-local space
+                var localApproach = ToPartLocal(currentPoint, part);
+
+                Program processedProgram;
+                Vector lastCutLocal;
+
+                if (!part.HasManualLeadIns && CuttingStrategy != null)
+                {
+                    var cuttingResult = CuttingStrategy.Apply(part.Program, localApproach);
+                    processedProgram = cuttingResult.Program;
+                    lastCutLocal = cuttingResult.LastCutPoint;
+                }
+                else
+                {
+                    processedProgram = part.Program;
+                    lastCutLocal = GetProgramEndPoint(part.Program);
+                }
+
+                // Pierce point: program start point in plate space
+                var pierceLocal = GetProgramStartPoint(part.Program);
+                var piercePoint = ToPlateSpace(pierceLocal, part);
+
+                // Plan rapid from currentPoint to pierce point
+                var rapidPath = RapidPlanner.Plan(currentPoint, piercePoint, cutAreas);
+
+                results.Add(new ProcessedPart
+                {
+                    Part = part,
+                    ProcessedProgram = processedProgram,
+                    RapidPath = rapidPath
+                });
+
+                // Update cut areas with part perimeter
+                var perimeter = GetPartPerimeter(part);
+                if (perimeter != null)
+                    cutAreas.Add(perimeter);
+
+                // Update current point to last cut point in plate space
+                currentPoint = ToPlateSpace(lastCutLocal, part);
+            }
+
+            return new PlateResult { Parts = results };
+        }
+
+        private static Vector ToPartLocal(Vector platePoint, Part part)
+        {
+            return platePoint - part.Location;
+        }
+
+        private static Vector ToPlateSpace(Vector localPoint, Part part)
+        {
+            return localPoint + part.Location;
+        }
+
+        private static Vector GetProgramStartPoint(Program program)
+        {
+            if (program.Codes.Count == 0)
+                return Vector.Zero;
+
+            var first = program.Codes[0];
+            if (first is Motion motion)
+                return motion.EndPoint;
+
+            return Vector.Zero;
+        }
+
+        private static Vector GetProgramEndPoint(Program program)
+        {
+            for (var i = program.Codes.Count - 1; i >= 0; i--)
+            {
+                if (program.Codes[i] is Motion motion)
+                    return motion.EndPoint;
+            }
+
+            return Vector.Zero;
+        }
+
+        private static Shape GetPartPerimeter(Part part)
+        {
+            var entities = part.Program.ToGeometry();
+            if (entities == null || entities.Count == 0)
+                return null;
+
+            var profile = new ShapeProfile(entities);
+            var perimeter = profile.Perimeter;
+            if (perimeter == null || perimeter.Entities.Count == 0)
+                return null;
+
+            perimeter.Offset(part.Location);
+            return perimeter;
+        }
+    }
+}
diff --git a/OpenNest.Tests/PlateProcessorTests.cs b/OpenNest.Tests/PlateProcessorTests.cs
new file mode 100644
index 0000000..73d5a98
--- /dev/null
+++ b/OpenNest.Tests/PlateProcessorTests.cs
@@ -0,0 +1,132 @@
+using System.Collections.Generic;
+using System.Linq;
+using OpenNest.CNC;
+using OpenNest.CNC.CuttingStrategy;
+using OpenNest.Engine;
+using OpenNest.Engine.RapidPlanning;
+using OpenNest.Engine.Sequencing;
+using OpenNest.Geometry;
+using Xunit;
+
+namespace OpenNest.Tests;
+
+public class PlateProcessorTests
+{
+    private static Part MakePartAt(double x, double y) => TestHelpers.MakePartAt(x, y, size: 2);
+
+    [Fact]
+    public void Process_ReturnsAllParts()
+    {
+        var plate = new Plate(60, 120);
+        plate.Parts.Add(MakePartAt(10, 10));
+        plate.Parts.Add(MakePartAt(30, 30));
+        plate.Parts.Add(MakePartAt(50, 50));
+
+        var processor = new PlateProcessor
+        {
+            Sequencer = new RightSideSequencer(),
+            RapidPlanner = new SafeHeightRapidPlanner()
+        };
+
+        var result = processor.Process(plate);
+
+        Assert.Equal(3, result.Parts.Count);
+    }
+
+    [Fact]
+    public void Process_PreservesSequenceOrder()
+    {
+        var plate = new Plate(60, 120);
+        var left = MakePartAt(5, 10);
+        var right = MakePartAt(50, 10);
+        plate.Parts.Add(left);
+        plate.Parts.Add(right);
+
+        var processor = new PlateProcessor
+        {
+            Sequencer = new RightSideSequencer(),
+            RapidPlanner = new SafeHeightRapidPlanner()
+        };
+
+        var result = processor.Process(plate);
+
+        Assert.Same(right, result.Parts[0].Part);
+        Assert.Same(left, result.Parts[1].Part);
+    }
+
+    [Fact]
+    public void Process_SkipsCuttingStrategy_WhenManualLeadIns()
+    {
+        var plate = new Plate(60, 120);
+        var part = MakePartAt(10, 10);
+        part.HasManualLeadIns = true;
+        plate.Parts.Add(part);
+
+        var processor = new PlateProcessor
+        {
+            Sequencer = new LeftSideSequencer(),
+            CuttingStrategy = new ContourCuttingStrategy
+            {
+                Parameters = new CuttingParameters()
+            },
+            RapidPlanner = new SafeHeightRapidPlanner()
+        };
+
+        var result = processor.Process(plate);
+
+        Assert.Same(part.Program, result.Parts[0].ProcessedProgram);
+    }
+
+    [Fact]
+    public void Process_DoesNotMutatePart()
+    {
+        var plate = new Plate(60, 120);
+        var part = MakePartAt(10, 10);
+        var originalProgram = part.Program;
+        plate.Parts.Add(part);
+
+        var processor = new PlateProcessor
+        {
+            Sequencer = new LeftSideSequencer(),
+            RapidPlanner = new SafeHeightRapidPlanner()
+        };
+
+        var result = processor.Process(plate);
+
+        Assert.Same(originalProgram, part.Program);
+    }
+
+    [Fact]
+    public void Process_NoCuttingStrategy_PassesProgramThrough()
+    {
+        var plate = new Plate(60, 120);
+        var part = MakePartAt(10, 10);
+        plate.Parts.Add(part);
+
+        var processor = new PlateProcessor
+        {
+            Sequencer = new LeftSideSequencer(),
+            RapidPlanner = new SafeHeightRapidPlanner()
+        };
+
+        var result = processor.Process(plate);
+
+        Assert.Same(part.Program, result.Parts[0].ProcessedProgram);
+    }
+
+    [Fact]
+    public void Process_EmptyPlate_ReturnsEmptyResult()
+    {
+        var plate = new Plate(60, 120);
+
+        var processor = new PlateProcessor
+        {
+            Sequencer = new LeftSideSequencer(),
+            RapidPlanner = new SafeHeightRapidPlanner()
+        };
+
+        var result = processor.Process(plate);
+
+        Assert.Empty(result.Parts);
+    }
+}