diff --git a/src/kiri/conf.js b/src/kiri/conf.js
index 6499fb5a..31223651 100644
--- a/src/kiri/conf.js
+++ b/src/kiri/conf.js
@@ -465,6 +465,7 @@
                     camTraceDown: 0,
                     camTraceSpeed: 250,
                     camTracePlunge: 200,
+                    camTraceLines: false,
                     camDrillTool: 1000,
                     camDrillSpindle: 1000,
                     camDrillDownSpeed: 250,
diff --git a/src/mode/cam/client.js b/src/mode/cam/client.js
index 84e24f68..f7f6b10e 100644
--- a/src/mode/cam/client.js
+++ b/src/mode/cam/client.js
@@ -578,7 +578,7 @@
                         }
                     });
                 });
-            });
+            }, poppedRec.single);
             api.feature.hover = true;
             api.feature.hoverAdds = true;
             func.hover = func.traceHover;
@@ -867,7 +867,8 @@
             step:    'camTraceOver',
             down:    'camTraceDown',
             rate:    'camTraceSpeed',
-            plunge:  'camTracePlunge'
+            plunge:  'camTracePlunge',
+            single:  'camTraceLines',
         }).inputs = {
             tool:     UC.newSelect(LANG.cc_tool, {}, "tools"),
             sep:      UC.newBlank({class:"pop-sep"}),
@@ -879,6 +880,7 @@
             rate:     UC.newInput(LANG.cc_feed_s, {title:LANG.cc_feed_l, convert:UC.toInt, units:true}),
             plunge:   UC.newInput(LANG.cc_plng_s, {title:LANG.cc_plng_l, convert:UC.toInt, units:true}),
             sep:      UC.newBlank({class:"pop-sep"}),
+            single:   UC.newBoolean(LANG.cc_sngl_s, undefined, {title:LANG.cc_sngl_l}),
             select: UC.newRow([
                 UC.newButton(undefined, func.traceAdd, {icon:'<i class="fas fa-plus"></i>'}),
                 UC.newButton(undefined, func.traceDone, {icon:'<i class="fas fa-check"></i>'}),
diff --git a/src/mode/cam/driver.js b/src/mode/cam/driver.js
index 27560cbe..6629f311 100644
--- a/src/mode/cam/driver.js
+++ b/src/mode/cam/driver.js
@@ -25,11 +25,11 @@
         KIRI.loader.push(function(API) {
 
             if (KIRI.client)
-            CAM.traces = function(ondone) {
+            CAM.traces = function(ondone, single) {
                 KIRI.client.sync();
                 let settings = API.conf.get();
                 let widgets = API.widgets.map();
-                KIRI.client.send("cam_traces", { settings }, output => {
+                KIRI.client.send("cam_traces", { settings, single }, output => {
                     let ids = [];
                     KIRI.codec.decode(output).forEach(rec => {
                         ids.push(rec.id);
@@ -41,9 +41,9 @@
 
             if (KIRI.worker)
             KIRI.worker.cam_traces = function(data, send) {
-                const { settings } = data;
+                const { settings, single } = data;
                 const widgets = Object.values(wcache);
-                const fresh = widgets.filter(widget => CAM.traces(settings, widget));
+                const fresh = widgets.filter(widget => CAM.traces(settings, widget, single));
                 send.done(KIRI.codec.encode(fresh.map(widget => { return {
                     id: widget.id,
                     traces: widget.traces,
diff --git a/src/mode/cam/slice.js b/src/mode/cam/slice.js
index 25e1ee25..4a8600db 100644
--- a/src/mode/cam/slice.js
+++ b/src/mode/cam/slice.js
@@ -221,8 +221,8 @@
         }
     };
 
-    CAM.traces = function(settings, widget) {
-        if (widget.traces) {
+    CAM.traces = function(settings, widget, single) {
+        if (widget.traces && widget.trace_single === single) {
             // do no work if cached
             return false;
         }
@@ -257,7 +257,13 @@
                         return;
                     }
                 }
-                traces.push(poly);
+                if (single) {
+                    poly.forEachSegment((p1, p2) => {
+                        traces.push(newPolygon().append(p1).append(p2).setOpen());
+                    }, poly.open);
+                } else {
+                    traces.push(poly);
+                }
             });
         };
         let opts = { each: oneach, over: false, flatoff: 0, edges: true, openok: true };
@@ -265,6 +271,7 @@
         opts.over = true;
         slicer.slice(indices, opts);
         widget.traces = traces;
+        widget.trace_single = single;
         return true;
     };
 
diff --git a/web/kiri/lang/en.js b/web/kiri/lang/en.js
index 632b8a26..68714f46 100644
--- a/web/kiri/lang/en.js
+++ b/web/kiri/lang/en.js
@@ -357,6 +357,8 @@ kiri.lang['en-us'] = {
     cc_feed_l:      ["max cutting speed in","workspace units / minute"],
     cc_plng_s:      "plunge rate",
     cc_plng_l:      ["max z axis speed in","workspace units / minute"],
+    cc_sngl_s:      "select lines only",
+    cc_sngl_l:      ["select only single edges","instead of connected polylines"],
 
     // CNC COMMON
     cc_menu:        "limits",