Tweaked tool change position and extruder offset. Updated README.

README.md

@@ -19,6 +19,8 @@ Please, carefully read both Installation and Post Install sections below.
 
 ## Changelog
 
+v0.6 (Feb 16, 2020) - Implemented extruder offset to aid Cura in path computation (wipe the inactive nozzle, etc), tweaked ooze shield parameters and tool change position.
+
 v0.5 (Feb 14, 2020) - DUAL extrusion support!
 
 v0.4 (Feb 1, 2020) - Linux support in install script (thanks @toluschr)
@@ -59,6 +61,12 @@ There are two ways to install the application - into user folder (preferred) and
 
 ### MacOS 
 
+#### Note for MacOS users
+
+If you save the sliced model as x3g (default for FFCP) and you get an empty file, follow the steps described in this issue to install the required libraries: https://github.com/haskell/haskell-platform/issues/231#issuecomment-177530716
+
+Or alternatively forget about X3G and use gcode with Octoprint!
+
 #### Into user library (preferred for single-user installations)
 
 This is a preferred way as it should survive application updates.

resources/extruders/creatorpro_extruder_1.def.json

@@ -17,11 +17,11 @@
         "machine_nozzle_offset_x": { "default_value": 0.0 },
         "machine_nozzle_offset_y": { "default_value": 0.0 },
         "machine_extruder_start_pos_abs": { "default_value": true },
-        "machine_extruder_start_pos_x": { "value": "prime_tower_position_x" },
-        "machine_extruder_start_pos_y": { "value": "prime_tower_position_y" },
+        "machine_extruder_start_pos_x": { "value": "machine_width/2 - 1" },
+        "machine_extruder_start_pos_y": { "value": "machine_depth/2 - 1" },
         "machine_extruder_end_pos_abs": { "default_value": true },
-        "machine_extruder_end_pos_x": { "value": "prime_tower_position_x" },
-        "machine_extruder_end_pos_y": { "value": "prime_tower_position_y" },
+        "machine_extruder_end_pos_x": { "value": "machine_width/2 - 1" },
+        "machine_extruder_end_pos_y": { "value": "machine_depth/2 - 1" },
         "initial_pos_gcode": { "default_value": "G1 X150 Y-70 Z30 F9000 ; move to wait position right hand side of the table" },
         "nozzle_wipe_gcode": { "default_value": "G1 X110 Y-70 E25 F300 ; purge nozzle\nG1 X120 Y-70 Z0.15 F1200 ; slow wipe\nG1 X110 Y-70 Z0.5 F1200 ; lift" }
     }

resources/extruders/creatorpro_extruder_2.def.json

@@ -14,14 +14,14 @@
         },
         "machine_nozzle_size": { "default_value": 0.4 },
         "material_diameter": { "default_value": 1.75 },
-        "machine_nozzle_offset_x": { "default_value": -33.0 },
+        "machine_nozzle_offset_x": { "default_value": -34.0 },
         "machine_nozzle_offset_y": { "default_value": 0.0 },
         "machine_extruder_start_pos_abs": { "default_value": true },
-        "machine_extruder_start_pos_x": { "value": "prime_tower_position_x" },
-        "machine_extruder_start_pos_y": { "value": "prime_tower_position_y" },
+        "machine_extruder_start_pos_x": { "value": "machine_width/2 - 1" },
+        "machine_extruder_start_pos_y": { "value": "machine_depth/2 - 1" },
         "machine_extruder_end_pos_abs": { "default_value": true },
-        "machine_extruder_end_pos_x": { "value": "prime_tower_position_x" },
-        "machine_extruder_end_pos_y": { "value": "prime_tower_position_y" },
+        "machine_extruder_end_pos_x": { "value": "machine_width/2 - 1" },
+        "machine_extruder_end_pos_y": { "value": "machine_depth/2 - 1" },
         "initial_pos_gcode": { "default_value": "G1 X-110 Y-70 Z30 F9000 ; move to wait position left hand side of the table" },
         "nozzle_wipe_gcode": { "default_value": "G1 X-140 Y-70 F9000 ; reposition nozzle\nG1 X-100 Y-70 E25 F300 ; purge nozzle\nG1 X-110 Y-70 Z0.15 F1200 ; slow wipe\nG1 X-100 Y-70 Z0.5 F1200 ; lift" }
     }