updated readme to reflect extruder changes

diff --git a/stl/extruder/readme.txt b/stl/extruder/readme.txt
index 87efca9..368de63 100644 (file)
--- a/stl/extruder/readme.txt
+++ b/stl/extruder/readme.txt
@@ -6,3 +6,5 @@ The Extruder files, including the X carriage, came originally from the Prusa i3
 Those works are in turn derived from earlier designs by ch1t0, afaik.
 
 I have modified the body of the extruder to translate the motor 5MM toward -X to accomodate the herringbone gears, which I generated from a modified version of the herringbone script by ScribbleJ.
 Those works are in turn derived from earlier designs by ch1t0, afaik.
 
 I have modified the body of the extruder to translate the motor 5MM toward -X to accomodate the herringbone gears, which I generated from a modified version of the herringbone script by ScribbleJ.

+
+** The gear ratio for the herringbone gears is 37/13, which will necessitate a change to your firmware!