diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index b67dadf..fd093bc 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -4,7 +4,7 @@ set(PROGRAMS vol_gif vol_stl gif_info gif_png gif_stl stl_info stl_png stl_path
              png_size png_scale png_distances png_offset png_grb png_drl
              png_path png_halftone svg_path
              path_eps path_dxf path_png path_rml path_sbp path_g path_camm
-             path_epi path_uni path_oms path_ord
+             path_epi path_uni path_gcc path_oms path_ord
              path_join path_array path_info path_time
     CACHE STRING "Core program list")
 
diff --git a/src/core/path_gcc.c b/src/core/path_gcc.c
index 5775678..80a353b 100644
--- a/src/core/path_gcc.c
+++ b/src/core/path_gcc.c
@@ -1,9 +1,12 @@
 //
-// path_epi.c
-//    convert path to Epilog lasercutter .epi
+// path_gcc.c
+//    convert path to GCC lasercutter .gcc
+// Based on path_epi.c
 //
 // Neil Gershenfeld 8/18/13
 // (c) Massachusetts Institute of Technology 2013
+// Jon Nordby 9/1/14
+// (c) Jon Nordby, Fellesverkstedet 2014
 //
 // This work may be reproduced, modified, distributed,
 // performed, and displayed for any purpose, but must
@@ -15,9 +18,12 @@
 
 #include "fab.h"
 
-void fab_write_epi(struct fab_vars *v, char *output_file_name, int power, int speed, int focus, float ox, float oy, char loc, int rate, int max_power) {
+void fab_write_gcc(struct fab_vars *v, char *output_file_name,
+                    int power, int speed, int focus,
+                    float ox, float oy, char loc,
+                    int rate, int max_power) {
    //
-   // write path to Epilog lasercutter file
+   // write path to GCC lasercutter file
    //
 	FILE *output_file;
    int i,x,y,z,current_z,layer_power,nsegs=0,npts=0;
@@ -127,9 +133,9 @@ int main(int argc, char **argv) {
    // command line args
    //
    if (!((argc == 3) || (argc == 4) || (argc == 5) || (argc == 6) || (argc == 8) || (argc == 9) || (argc == 10) || (argc == 11))) {
-      printf("command line: path_epi in.path out.epi [power [speed [focus [x y [ location [rate [max_power]]]]]]]\n");
+      printf("command line: path_gcc in.path out.gcc [power [speed [focus [x y [ location [rate [max_power]]]]]]]\n");
       printf("   in.path = input path file\n");
-      printf("   out.epi= output Epilog lasercutter file\n");
+      printf("   out.gcc= output GCC lasercutter file\n");
       printf("   power = percent power, for minimum z value (optional, 0-100, default 50)\n");
       printf("   speed = percent speed (optional, 0-100, default 50)\n");
       printf("   focus = autofocus (optional, 0=off | 1=on, default on)\n");
@@ -175,8 +181,8 @@ int main(int argc, char **argv) {
    //
    fab_read_path(&v,argv[1]);
    //
-   // write .epi
+   // write .gcc
    //
-   fab_write_epi(&v,argv[2],power,speed,focus,ox,oy,loc,rate,max_power);
+   fab_write_gcc(&v,argv[2],power,speed,focus,ox,oy,loc,rate,max_power);
    }
 
diff --git a/src/guis/CMakeLists.txt b/src/guis/CMakeLists.txt
index f6ab3c6..c3c7097 100644
--- a/src/guis/CMakeLists.txt
+++ b/src/guis/CMakeLists.txt
@@ -7,7 +7,7 @@ set(GUIs fab fab.html fabserver
          make_math_camm make_math_epi make_math_g make_math_ord make_math_eps
          make_math_uni make_math_rml make_math_sbp make_math_grb
          make_math_drl
-         make_png_png make_png_eps make_png_epi make_png_uni make_png_grb
+         make_png_png make_png_eps make_png_epi make_png_uni make_png_grb make_png_gcc
          make_png_epi_halftone make_png_uni_halftone make_png_rml make_png_sbp
          make_png_ord make_png_camm make_png_plt make_png_g make_png_drl
          make_png_oms
diff --git a/src/guis/make_png_gcc b/src/guis/make_png_gcc
index 44884e3..d6c0f87 100755
--- a/src/guis/make_png_gcc
+++ b/src/guis/make_png_gcc
@@ -1,15 +1,17 @@
 #!/usr/bin/env python
 #
-# make_png_epi
-#    .png to .epi GUI wrapper
+# make_png_gcc
+#    .png to .gcc GUI wrapper
+# Basd on make_png_epi
 #
 # Neil Gershenfeld
 # CBA MIT 1/24/11
-#
 # (c) Massachusetts Institute of Technology 2011
 # Permission granted for experimental and personal use;
 # license for commercial sale available from MIT.
-#
+# # Jon Nordby 9/1/14
+# (c) Jon Nordby, Fellesverkstedet 2014
+
 # imports
 #
 import wx,sys
@@ -17,11 +19,11 @@ from fab_set import fab_frame
 from panel_control import control_panel
 from panel_png import png_panel
 from panel_png_path import png_path_panel
-from panel_path_epi import path_epi_panel
+from panel_path_gcc import path_gcc_panel
 #
 # command line
 #
-print "command line: make_png_epi [input_file [size]]"
+print "command line: make_png_gcc [input_file [size]]"
 print "   input_file = input .png file (optional)"
 print "   size = image panel size (optional)"
 #
@@ -31,11 +33,11 @@ app = wx.App()
 #
 # add panels to frame
 #
-frame = fab_frame("make_png_epi",sys.argv)
+frame = fab_frame("make_png_gcc",sys.argv)
 frame.control_panel = control_panel(frame)
 frame.sizer.Add(frame.control_panel,(0,0),span=(1,3),flag=wx.ALIGN_CENTER_HORIZONTAL)
-frame.epi_panel = path_epi_panel(frame)
-frame.sizer.Add(frame.epi_panel,(1,2))
+frame.gcc_panel = path_gcc_panel(frame)
+frame.sizer.Add(frame.gcc_panel,(1,2))
 frame.path_panel = png_path_panel(frame)
 frame.sizer.Add(frame.path_panel,(1,1))
 frame.png_panel = png_panel(frame)
@@ -43,7 +45,7 @@ frame.sizer.Add(frame.png_panel,(1,0))
 #
 # set defaults
 #
-frame.set_png_epi()
+frame.set_png_gcc()
 #
 # fit and show frame
 #
diff --git a/src/py/CMakeLists.txt b/src/py/CMakeLists.txt
index 0d57871..7c03e1e 100644
--- a/src/py/CMakeLists.txt
+++ b/src/py/CMakeLists.txt
@@ -9,7 +9,7 @@ set(PYs fab_mods.py fab_set.py panel_control.py
         panel_png_drl.py panel_path.py
         panel_path_rml.py panel_path_plt.py panel_path_oms.py
         panel_path_sbp.py panel_path_ord.py panel_path_camm.py
-        panel_path_epi.py panel_path_uni.py panel_path_g.py
+        panel_path_epi.py panel_path_uni.py panel_path_g.py panel_path_gcc.py
         panel_path_eps.py panel_path_snap.py panel_path_dxf.py
         panel_stl.py panel_stl_png.py
         panel_svg.py panel_svg_path.py
diff --git a/src/py/fab_mods.py b/src/py/fab_mods.py
index a0ea104..1e40d47 100644
--- a/src/py/fab_mods.py
+++ b/src/py/fab_mods.py
@@ -76,6 +76,9 @@ def set_workflows(frame,formats,workflows):
    frame.processes.Append("Universal halftone (.uni)")
    workflows["image (.png) : Universal halftone (.uni)"] = "make_png_uni_halftone"
    #
+   frame.processes.Append("GCC lasercutter (.gcc)")
+   workflows["image (.png) : GCC lasercutter (.gcc)"] = "make_png_gcc"
+   #
    frame.processes.Append("Resonetics excimer (.oms)")
    workflows["image (.png) : Resonetics excimer (.oms)"] = "make_png_oms"
    workflows["drawing (.svg) : Resonetics excimer (.oms)"] = "make_svg_oms"
diff --git a/src/py/fab_set.py b/src/py/fab_set.py
index 1161a08..4d86cdc 100644
--- a/src/py/fab_set.py
+++ b/src/py/fab_set.py
@@ -66,6 +66,39 @@ class fab_frame(wx.Frame):
       = "self.epi_panel.power_2D.SetValue('75');\
          self.epi_panel.speed_2D.SetValue('25');"
    #
+   # set .png .epi defaults
+   #
+   def set_png_gcc(self):
+      self.defaults = {}
+      self.control_panel.defaults.Append('cardboard')
+      self.defaults["cardboard"]\
+      = "self.png_path_panel.diameter_rough.SetValue('0.25');\
+         self.png_path_panel.error_rough.SetValue('1.5');\
+         self.png_path_panel.diameter_finish.SetValue('0.25');\
+         self.png_path_panel.clearance_diameter_finish.SetValue('0.25');\
+         self.png_path_panel.error_finish.SetValue('1.5');\
+         self.png_path_panel.diameter_2D.SetValue('0.25');\
+         self.png_path_panel.error_2D.SetValue('1.5');\
+         self.gcc_panel.power_2D.SetValue('25');\
+         self.gcc_panel.speed_2D.SetValue('75');\
+         self.gcc_panel.min_power_3D.SetValue('5');\
+         self.gcc_panel.max_power_3D.SetValue('25');\
+         self.gcc_panel.speed_3D.SetValue('75');"
+      self.control_panel.defaults.Append('acrylic')
+      self.defaults["acrylic"]\
+      = "self.png_path_panel.diameter_rough.SetValue('0.25');\
+         self.png_path_panel.error_rough.SetValue('1.5');\
+         self.png_path_panel.diameter_finish.SetValue('0.25');\
+         self.png_path_panel.clearance_diameter_finish.SetValue('0.25');\
+         self.png_path_panel.error_finish.SetValue('1.5');\
+         self.png_path_panel.diameter_2D.SetValue('0.25');\
+         self.png_path_panel.error_2D.SetValue('1.5');\
+         self.gcc_panel.power_2D.SetValue('75');\
+         self.gcc_panel.speed_2D.SetValue('25');\
+         self.gcc_panel.min_power_3D.SetValue('25');\
+         self.gcc_panel.max_power_3D.SetValue('75');\
+         self.gcc_panel.speed_3D.SetValue('25');"
+   #
    # set .cad .epi defaults
    #
    def set_cad_epi(self):
diff --git a/src/py/panel_path_gcc.py b/src/py/panel_path_gcc.py
index c277291..338abbe 100644
--- a/src/py/panel_path_gcc.py
+++ b/src/py/panel_path_gcc.py
@@ -1,9 +1,12 @@
 #
-# panel_path_epi.py
-#    make .epi from .path
+# panel_path_gcc.py
+#    make .gcc from .path
+# Based on panel_path_epi.py
 #
 # Neil Gershenfeld 8/19/13
 # (c) Massachusetts Institute of Technology 2013
+# Jon Nordby 9/1/14
+# (c) Jon Nordby, Fellesverkstedet 2014
 #
 # This work may be reproduced, modified, distributed,
 # performed, and displayed for any purpose, but must
@@ -20,18 +23,18 @@ import wx,os,string
 #
 # panel class
 #
-class path_epi_panel(wx.Panel):
+class path_gcc_panel(wx.Panel):
    def __init__(self,parent):
       self.parent = parent
       self.parent.path_file = ''
       #
-      # make epi
+      # make gcc
       #
-      def make_epi(event):
+      def make_gcc(event):
          if (self.parent.path_file == ''):
-            print 'panel_path_epi: oops -- need path file'
+            print 'panel_path_gcc: oops -- need path file'
             return
-         self.parent.epi_file = self.parent.tmp+self.parent.rootname+'.epi'
+         self.parent.gcc_file = self.parent.tmp+self.parent.rootname+'.gcc'
          if (string.find(self.parent.path_type,"2D") != -1):
             power = self.power_2D.GetValue()
             if (self.focus_2D.GetValue()):
@@ -50,7 +53,7 @@ class path_epi_panel(wx.Panel):
                loc = 'r'
             speed = self.speed_2D.GetValue()
             rate = self.rate_2D.GetValue()
-            command = 'path_epi '+'\"'+self.parent.path_file+'\"'+' '+'\"'+self.parent.epi_file+'\"'+' '+power+' '+speed+' '+focus+' '+ox+' '+oy+' '+loc+' '+' '+rate
+            command = 'path_gcc '+'\"'+self.parent.path_file+'\"'+' '+'\"'+self.parent.gcc_file+'\"'+' '+power+' '+speed+' '+focus+' '+ox+' '+oy+' '+loc+' '+' '+rate
             print command
             os.system(command)
             self.button.Show()
@@ -75,20 +78,20 @@ class path_epi_panel(wx.Panel):
                loc = 'r'
             speed = self.speed_3D.GetValue()
             rate = self.rate_3D.GetValue()
-            command = 'path_epi '+'\"'+self.parent.path_file+'\"'+' '+'\"'+self.parent.epi_file+'\"'+' '+min_power+' '+speed+' '+focus+' '+ox+' '+oy+' '+loc+' '+' '+rate+' '+max_power
+            command = 'path_gcc '+'\"'+self.parent.path_file+'\"'+' '+'\"'+self.parent.gcc_file+'\"'+' '+min_power+' '+speed+' '+focus+' '+ox+' '+oy+' '+loc+' '+' '+rate+' '+max_power
             print command
             os.system(command)
             self.button.Show()
             self.parent.Layout()
             self.parent.Fit()
          else:
-            print "panel_path_epi: oops -- don't recognize path type"
+            print "panel_path_gcc: oops -- don't recognize path type"
             return
       #
       # send
       #
       def fab_send(event):
-         command = 'fab_send '+'\"'+self.parent.epi_file+'\"'
+         command = 'fab_send '+'\"'+self.parent.gcc_file+'\"'
          print command
          os.system(command)
       #
@@ -100,7 +103,7 @@ class path_epi_panel(wx.Panel):
       #
       # label
       #
-      label = wx.StaticText(self,label='to: epi')
+      label = wx.StaticText(self,label='to: gcc')
       bold_font = wx.Font(10,wx.DEFAULT,wx.NORMAL,wx.BOLD)
       label.SetFont(bold_font)
       self.sizer.Add(label,(0,0),flag=wx.ALIGN_CENTER_HORIZONTAL)
@@ -115,8 +118,8 @@ class path_epi_panel(wx.Panel):
       #
       # controls
       #
-      make = wx.Button(self,label='make .epi')
-      make.Bind(wx.EVT_BUTTON,make_epi)
+      make = wx.Button(self,label='make .gcc')
+      make.Bind(wx.EVT_BUTTON,make_gcc)
       self.sizer.Add(make,(2,0),flag=wx.ALIGN_CENTER_HORIZONTAL)
       #
       # 2D panel
diff --git a/src/scripts/fab_send b/src/scripts/fab_send
index 84b15d5..69e8c66 100755
--- a/src/scripts/fab_send
+++ b/src/scripts/fab_send
@@ -21,6 +21,7 @@ commands = {
      '.drl': 'gerbv "$file"',
      '.dxf': 'gedit "$file"',
      '.epi': 'printer=laser; lprm -P$printer -; lpr -P$printer "$file"',
+     '.gcc': 'printer=laser; lprm -P$printer -; lpr -P$printer "$file"',
      '.uni': 'port=/dev/lp0; cat "$file" > $port',
      '.stl': 'meshlab "$file"',
      '.ord': 'gedit "$file"',