diff --git a/js/kiri-driver-fdm.js b/js/kiri-driver-fdm.js
index 783f1d82..6a2b2cbe 100644
--- a/js/kiri-driver-fdm.js
+++ b/js/kiri-driver-fdm.js
@@ -296,6 +296,7 @@ var gs_kiri_fdm = exports;
             shortFact = process.outputShortFactor,
             maxPrintMMM = process.outputFeedrate * 60,
             seekMMM = process.outputSeekrate * 60,
+            retOver = process.outputRetractOver,
             retDist = process.outputRetractDist,
             retSpeed = process.outputRetractSpeed * 60,
             // ratio of nozzle area to filament area times
@@ -463,7 +464,7 @@ var gs_kiri_fdm = exports;
                     if (out.speed) {
                         moveMMM = out.speed * 60;
                     }
-                    if (out.retract) {
+                    if (!retracted && (out.retract || dist >= retOver)) {
                         retracted = retDist;
                         moveTo({e:-retracted}, retSpeed, "retract (ooze control)");
                         moveTo({x:x, y:y}, moveMMM);
diff --git a/js/kiri.js b/js/kiri.js
index 0261fbda..dd950bc5 100644
--- a/js/kiri.js
+++ b/js/kiri.js
@@ -72,6 +72,7 @@ self.kiri.license = exports.LICENSE;
                     outputShellMult: 1,
                     outputFillMult: 1,
                     outputSparseMult: 1,
+                    outputRetractOver: 1,
                     outputRetractDist: 1,
                     outputRetractSpeed: 1,
                     outputBrimCount: 1,
@@ -265,6 +266,7 @@ self.kiri.license = exports.LICENSE;
                 outputShellMult: 1.0,
                 outputFillMult: 1.25,
                 outputSparseMult: 1.5,
+                outputRetractOver: 5.0,
                 outputRetractDist: 0.5,
                 outputRetractSpeed: 20,
                 outputWipeSpeed: 20,
@@ -2349,6 +2351,7 @@ self.kiri.license = exports.LICENSE;
             outputBrimOffset: UC.newInput("skirt offset", {title:"millimeters", convert:UC.toFloat, modes:FDM}),
 
             advanced: UC.newGroup("advanced", null, {modes:FDM}),
+            outputRetractOver: UC.newInput("retract over", {title:"move threshold that\ntriggers retraction\n0 to disable", convert:UC.toFloat, modes:FDM}),
             outputRetractDist: UC.newInput("retract dist", {title:"amount to retract filament", convert:UC.toFloat, modes:FDM}),
             outputRetractSpeed: UC.newInput("retract rate", {title:"speed of filament\nretraction in mm/s", convert:UC.toInt, modes:FDM}),
             outputWipeSpeed: UC.newInput("wipe speed", {title:"speed while wiping\nnozzle in mm/s", convert:UC.toInt, modes:FDM}),
diff --git a/js/license.js b/js/license.js
index 24e9081a..af635b4f 100644
--- a/js/license.js
+++ b/js/license.js
@@ -1,7 +1,7 @@
 var exports = {
     COPYRIGHT:"Copyright (C) 2014-2017 Stewart Allen <stewart@neuron.com> - All Rights Reserved",
     LICENSE:"Unauthorized copying, modification and re-distribution are strictly prohibited without prior written consent.",
-    VERSION:"1.0.70"
+    VERSION:"1.0.71"
 };
 if (!module) var module = {};
 module.exports = exports;