diff --git a/src/settings/default.yml b/src/settings/default.yml
index 40532b8..6c9e8b8 100644
--- a/src/settings/default.yml
+++ b/src/settings/default.yml
@@ -1,3 +1,4 @@
+zOffset: 0.3
 dimensions:
   x: 200
   y: 200
diff --git a/src/sliceActions/calculateLayersIntersections.js b/src/sliceActions/calculateLayersIntersections.js
index 78c2f21..7a1bc2e 100644
--- a/src/sliceActions/calculateLayersIntersections.js
+++ b/src/sliceActions/calculateLayersIntersections.js
@@ -2,11 +2,12 @@ import * as THREE from 'three';
 
 export default function calculateLayersIntersections(lines, settings) {
   const {
+    dimensions: { z: dimensionsZ },
     layerHeight,
-    dimensions: { z: dimensionsZ }
+    zOffset
   } = settings;
 
-  const numLayers = Math.floor(dimensionsZ / layerHeight);
+  const numLayers = Math.floor((dimensionsZ - zOffset) / layerHeight);
 
   const layerIntersectionIndexes = Array.from(Array(numLayers)).map(() => []);
   const layerIntersectionPoints = Array.from(Array(numLayers)).map(() => []);
@@ -24,7 +25,7 @@ export default function calculateLayersIntersections(lines, settings) {
 
         layerIntersectionIndexes[layerIndex].push(lineIndex);
 
-        const y = layerIndex * layerHeight;
+        const y = layerIndex * layerHeight + zOffset;
 
         let x, z;
         if (line.start.y === line.end.y) {
diff --git a/src/sliceActions/slicesToGCode.js b/src/sliceActions/slicesToGCode.js
index 4c3b9bb..790385d 100644
--- a/src/sliceActions/slicesToGCode.js
+++ b/src/sliceActions/slicesToGCode.js
@@ -12,7 +12,8 @@ export default function slicesToGCode(slices, settings) {
     travelSpeed,
     retraction,
     travel,
-    combing
+    combing,
+    zOffset
   } = settings;
 
   const filamentSurfaceArea = Math.pow((filamentThickness / 2), 2) * Math.PI;
@@ -29,7 +30,7 @@ export default function slicesToGCode(slices, settings) {
   let isFirstLayer = true;
   for (let layer = 0; layer < slices.length; layer ++) {
     const slice = slices[layer];
-    const z = layer * layerHeight;
+    const z = layer * layerHeight + zOffset;
 
     if (layer === 1) {
       gcode.turnFanOn();