diff --git a/src/interface/index.js b/src/interface/index.js
index 47f8bff..7f8f9b2 100644
--- a/src/interface/index.js
+++ b/src/interface/index.js
@@ -209,6 +209,13 @@ class Interface extends React.Component {
     const { name } = this.props;
 
     if (isSlicing) return;
+    if (!settings) {
+      this.setState({ error: 'please select a printer first' });
+    }
+    if (target === 'WIFI' && !settings.ip) {
+      this.setState({ error: 'please connect to a WiFi enabled printer' });
+      return;
+    }
     if (!mesh) {
       this.setState({ error: 'there is no file to slice' });
       return;
@@ -311,7 +318,7 @@ class Interface extends React.Component {
 
   render() {
     const { classes, onCancel } = this.props;
-    const { isSlicing, progress, showFullScreen, error, objectDimensions, openUrlDialog } = this.state;
+    const { isSlicing, progress, showFullScreen, error, objectDimensions, openUrlDialog, settings } = this.state;
 
     const style = { ...(showFullScreen ? {} : { maxWidth: 'inherit', width: '100%', height: '100%' }) };
 
@@ -349,7 +356,7 @@ class Interface extends React.Component {
               onRequestClose={this.closePopover}
             >
             <Menu>
-              <MenuItem primaryText="Send over WiFi" onTouchTap={() => this.slice('WIFI')} />
+              <MenuItem disabled={!Boolean(settings && settings.ip)} primaryText="Send over WiFi" onTouchTap={() => this.slice('WIFI')} />
               <MenuItem primaryText="Download GCode" onTouchTap={() => this.slice('DOWNLOAD')} />
             </Menu>
             </Popover>
diff --git a/src/interface/utils.js b/src/interface/utils.js
index 3dd601e..915e0ea 100644
--- a/src/interface/utils.js
+++ b/src/interface/utils.js
@@ -106,9 +106,10 @@ export function fetchProgress(url, data = {}, onProgress) {
     if (xhr.upload && onProgress) xhr.upload.onprogress = onProgress;
     if (xhr.responseType) xhr.responseType = 'blob';
 
-    request.headers.forEach((value, name) => {
-      xhr.setRequestHeader(name, value)
-    });
+    // Malyan printer doesn't like headers...
+    // request.headers.forEach((value, name) => {
+    //   xhr.setRequestHeader(name, value)
+    // });
 
     xhr.send(data.body);
   });
@@ -118,8 +119,6 @@ const GCODE_SERVER_URL = 'https://gcodeserver.doodle3d.com';
 const CONNECT_URL = 'http://connect.doodle3d.com/';
 
 export async function slice(target, name, mesh, settings, updateProgress) {
-  if (!settings) throw { message: 'please select a printer first', code: 0 };
-
   let steps;
   let currentStep = 0;
   switch (target) {
@@ -127,6 +126,7 @@ export async function slice(target, name, mesh, settings, updateProgress) {
       steps = 1;
       break;
     case 'WIFI':
+    case 'DOODLE3D-WIFI-BOX':
       steps = 2;
       break;
     default:
@@ -151,12 +151,29 @@ export async function slice(target, name, mesh, settings, updateProgress) {
 
   switch (target) {
     case 'DOWNLOAD': {
-      const blob = new File([gcode], `${name}.gcode`, { type: 'text/plain;charset=utf-8' });
+      const blob = new File([gcode], `${name}.gcode`, { type: 'text/plain' });
       fileSaver.saveAs(blob);
       break;
     }
 
     case 'WIFI': {
+      const body = new FormData();
+      const file = new File([gcode], 'doodle.gcode', { type: 'plain/text' });
+      body.append('file', file);
+
+      await fetchProgress(`http://${settings.ip}/upload`, { method: 'POST', body }, (progess) => {
+        updateProgress({
+          action: 'Uploading',
+          percentage: currentStep / steps + progess.loaded / progess.total / steps
+        });
+      });
+      currentStep ++;
+      await fetchProgress(`http://${settings.ip}/set?code=M566 ${name}.gcode`, { method: 'GET' });
+      await fetchProgress(`http://${settings.ip}/set?code=M565`, { method: 'GET' });
+      break;
+    }
+
+    case 'DOODLE3D-WIFI-BOX': {
       // upload G-code file to AWS S3
       const { data: { reservation, id } } = await fetch(`${GCODE_SERVER_URL}/upload`, { method: 'POST' })
         .then(response => response.json());