diff --git a/notes.md b/notes.md
index 0a92e655..491659d3 100644
--- a/notes.md
+++ b/notes.md
@@ -7,7 +7,6 @@
 # - redo path planning
 # - double-sided assistance
 # `fdm`
-# - layer start point control
 # - bind process to z ranges or boxed regions
 
 ## `C` cosmetic, `F` functional, `P` performance, `B` bug fix
diff --git a/src/kiri/conf.js b/src/kiri/conf.js
index 9bdbb58d..421b3b7f 100644
--- a/src/kiri/conf.js
+++ b/src/kiri/conf.js
@@ -283,6 +283,7 @@
                     sliceHeight: 0.25,
                     sliceShells: 3,
                     sliceShellOrder: "in-out",
+                    sliceLayerStart: "last",
                     sliceFillAngle: 45,
                     sliceFillOverlap: 0.3,
                     sliceFillSparse: 0.5,
diff --git a/src/kiri/init.js b/src/kiri/init.js
index 8c705dc2..3f748b24 100644
--- a/src/kiri/init.js
+++ b/src/kiri/init.js
@@ -1693,6 +1693,7 @@
             fdmSep:              UC.newBlank({class:"pop-sep", modes:FDM}),
             outputFanLayer:      UC.newInput(LANG.ou_fanl_s, {title:LANG.ou_fanl_l, convert:UC.toInt, bound:UC.bound(0,100), modes:FDM}),
             sliceShellOrder:     UC.newSelect(LANG.sl_ordr_s, {title:LANG.sl_ordr_l, modes:FDM}, "shell"),
+            sliceLayerStart:     UC.newSelect(LANG.sl_strt_s, {title:LANG.sl_strt_l, modes:FDM}, "start"),
             camConventional:     UC.newBoolean(LANG.ou_conv_s, onBooleanClick, {title:LANG.ou_conv_l, modes:CAM}),
             camEaseDown:         UC.newBoolean(LANG.cr_ease_s, onBooleanClick, {title:LANG.cr_ease_l, modes:CAM}),
             camDepthFirst:       UC.newBoolean(LANG.ou_depf_s, onBooleanClick, {title:LANG.ou_depf_l, modes:CAM}),
diff --git a/src/kiri/main.js b/src/kiri/main.js
index 2b511212..08e62446 100644
--- a/src/kiri/main.js
+++ b/src/kiri/main.js
@@ -138,6 +138,11 @@
             { name: "in-out" },
             { name: "out-in" },
         ],
+        start: [
+            { name: "last" },
+            { name: "center" },
+            { name: "origin" },
+        ],
         infill: [
             { name: "vase" },
             { name: "hex" },
diff --git a/src/kiri/print.js b/src/kiri/print.js
index 4f1f2fff..49813e7c 100644
--- a/src/kiri/print.js
+++ b/src/kiri/print.js
@@ -706,6 +706,16 @@
                     outputFills(next.fill, {fast: true});
                 }
             } else {
+                // control of layer start point
+                switch (process.sliceLayerStart) {
+                    case "center":
+                        startPoint = newPoint(0,0,startPoint.z);
+                        break;
+                    case "origin":
+                        startPoint = origin.clone();
+                        break;
+                }
+
                 // top object
                 let bounds = POLY.flatten(next.shellsAtDepth(0).clone(true));
 
diff --git a/web/kiri/lang/en.js b/web/kiri/lang/en.js
index 3fc82611..e863f721 100644
--- a/web/kiri/lang/en.js
+++ b/web/kiri/lang/en.js
@@ -186,6 +186,8 @@ kiri.lang['en-us'] = {
     sl_shel_l:      "number of perimeter\nwalls to generate",
     sl_ordr_s:      "shell order",
     sl_ordr_l:      "output shell order\ninside to outside\nor outside to inside\naffects surface quality",
+    sl_strt_s:      "layer start",
+    sl_strt_l:      "layer starting point\nlast = last layer end\ncenter = part center\norigin = device origin",
     ad_thin_s:      "thin walls",
     ad_thin_l:      "detect and fill gaps\nbetween shell walls",