diff --git a/extensions/fablabchemnitz/lasercut_jigsaw/lasercut_jigsaw.py b/extensions/fablabchemnitz/lasercut_jigsaw/lasercut_jigsaw.py
index 2b211908..1abd4ae6 100644
--- a/extensions/fablabchemnitz/lasercut_jigsaw/lasercut_jigsaw.py
+++ b/extensions/fablabchemnitz/lasercut_jigsaw/lasercut_jigsaw.py
@@ -408,7 +408,7 @@ class LasercutJigsaw(inkex.EffectExtension):
     def effect(self):
         
         # internal useful variables
-        self.stroke_width = 0.1 # default for visiblity
+        self.stroke_width =str(self.svg.unittouu("1px")) # default for visiblity
         self.borderLineStyle = {'stroke': self.options.color_border, 'fill': 'none', 'stroke-width': self.stroke_width,
                            'stroke-linecap': 'butt', 'stroke-linejoin': 'miter'}
         self.jigsawLineStyle = {'stroke': self.options.color_jigsaw, 'fill': 'none', 'stroke-width': self.stroke_width,
diff --git a/extensions/fablabchemnitz/robot_boxes/robot_boxes.py b/extensions/fablabchemnitz/robot_boxes/robot_boxes.py
index 6d7df67a..a3932a6c 100644
--- a/extensions/fablabchemnitz/robot_boxes/robot_boxes.py
+++ b/extensions/fablabchemnitz/robot_boxes/robot_boxes.py
@@ -307,10 +307,10 @@ class RobotBoxes(inkex.EffectExtension):
         # Translate group
         #transform = 'translate(' + str( self.svg.namedview.center[0] ) + ',' + str( self.svg.namedview.center[1] ) + ')'
         g = etree.SubElement(self.svg.get_current_layer(), 'g', {inkex.addNS('label','inkscape'):'RobotBox'})
-        #g.transform = transform 
+        g.transform = transform 
 
         # Create SVG Path for box bounds
-        style = { 'stroke': '#000000', 'fill': 'none', 'stroke-width':'0.1' }
+        style = { 'stroke': '#000000', 'fill': 'none', 'stroke-width':str(self.svg.unittouu("1px")) }
         etree.SubElement(g, inkex.addNS('path','svg'), {'style':str(inkex.Style(style)), 'd':dirtyFormat(bound_points)} )
 
         # Create SVG paths for crmap slots if set