diff --git a/freecad/kiconnect/board_sketch.py b/freecad/kiconnect/board_sketch.py
index e97e3ae..415efac 100644
--- a/freecad/kiconnect/board_sketch.py
+++ b/freecad/kiconnect/board_sketch.py
@@ -1,8 +1,9 @@
-import os 
+import os
 
 import FreeCAD as App
 from . import settings
 import Part
+import Sketcher
 
 from kipy.board_types import Footprint3DModel, BoardPolygon, BoardSegment, PadStackShape
 from kipy.geometry import PolygonWithHoles, PolyLine, PolyLineNode, Vector2
@@ -39,6 +40,7 @@ class BoardSketchObject(BaseObject):
     def setup_properties(self, feature):
         super(BoardSketchObject, self).setup_properties(feature)
 
+        # TODO remove in favor of getting BoardOffset from parent Board object
         feature.addProperty('App::PropertyPlacement', 'BoardOffset', 'KiConnect', 'Internal offset for zeroing out Footprint offset', hidden=True, read_only=True)
         feature.addProperty('App::PropertyVectorList', 'Vectors', 'KiConnect', 'Board Outline as Vectors', hidden=True)
 
@@ -47,41 +49,95 @@ class BoardSketchObject(BaseObject):
         vectors = []
 
         # board.get_shapes needs to be called to ensure polygons are actually up to date
+        # XXX get_polygon should be moved to the Sketches parent Board object
+        # then the board should be making the api refresh board call and process
+        # the polygon, instead of that functionality being in the API
         board_polygon = self.get_api().get_polygon(self.polygon_id)
 
         if not board_polygon:
             raise BoardPolyNotFoundException('Board Polygon not found: ' + self.polygon_id)
 
-        for node in board_polygon.polygons[0].outline:
-            vectors.append(self.point_to_vector(node.point))
-
-        self.feature.Vectors = vectors
-
-        begin = None
+        arc_count = 0
         start = None
 
-        # this probably needs a bit more control..
-        feature.Constraints = []
-        feature.Geometry = []
+        outline = board_polygon.polygons[0].outline
+        line = []
 
-        for vector in self.feature.Vectors:
-            if not start:
-                start = vector
-                begin = vector
+        for node in outline:
+            if node.has_arc:
+                arc_count = arc_count + 1
 
-                continue
+                if arc_count % 2 == 0:
+                    continue
 
-            feature.addGeometry(Part.LineSegment(start, vector))
-            start = vector
+                arc = node.arc
 
-        feature.addGeometry(Part.LineSegment(start, begin))
+
+                arc_start = self.point_to_vector(arc.start)
+                arc_mid = self.point_to_vector(arc.mid)
+                arc_end = self.point_to_vector(arc.end)
+
+                if not start:
+                    start = arc_start
+
+                # if there is already part of a LineSegment, connect it to the start of this Arc
+                if len(line) == 1:
+                    idx = feature.addGeometry(Part.LineSegment(line[0], arc_start))
+                    feature.addConstraint(Sketcher.Constraint("Coincident", idx - 1, 2, idx, 1))
+
+                    if line[0].x == arc_start.x:
+                        feature.addConstraint(Sketcher.Constraint("Vertical", idx))
+
+                    if line[0].y == arc_start.y:
+                        feature.addConstraint(Sketcher.Constraint("Horizontal", idx))
+
+                    line = []
+
+                idx = feature.addGeometry(Part.Arc(arc_start, arc_mid, arc_end))
+                if idx > 1:
+                    feature.addConstraint(Sketcher.Constraint("Coincident", idx - 1, 2, idx, 1))
+
+                line.append(arc_end)
+            elif node.has_point:
+                vector = self.point_to_vector(node.point)
+
+                if not start:
+                    start = vector
+
+                line.append(vector)
+            else:
+                raise Exception('Hit unknown geometry type in board polygon')
+
+            if len(line) > 2: raise Exception('Too many points in line segment', line)
+
+            if len(line) == 2:
+                idx = feature.addGeometry(Part.LineSegment(line[0], line[1]))
+                feature.addConstraint(Sketcher.Constraint("Coincident", idx - 1, 2, idx, 1))
+
+                if line[0].x == line[1].x:
+                    feature.addConstraint(Sketcher.Constraint("Vertical", idx))
+
+                if line[0].y == line[1].y:
+                    feature.addConstraint(Sketcher.Constraint("Horizontal", idx))
+
+                line = [ line[1] ]
+
+
+        if len(line) == 1:
+            idx = feature.addGeometry(Part.LineSegment(start, line[0]))
+            feature.addConstraint(Sketcher.Constraint("Coincident", 0, 1, idx, 1))
+            feature.addConstraint(Sketcher.Constraint("Coincident", idx - 1, 2, idx, 2))
+        else:
+            FreeCAD.Console.PrintError("Bad line segment:", line)
 
         feature.recompute()
 
+
 class BoardSketchViewProvider(BaseViewProvider):
     TYPE = 'KiConnect::BoardSketch'
     #ICON = 'kicad/board.svg'
 
+
 def makeBoardSketch(parent, kicad_board, polygon):
     feature = App.ActiveDocument.addObject('Sketcher::SketchObjectPython', 'BoardSketch')
     parent.addObject(feature)