diff --git a/src/kiri/export.js b/src/kiri/export.js
index 89d1b98d..27f299ca 100644
--- a/src/kiri/export.js
+++ b/src/kiri/export.js
@@ -106,6 +106,10 @@ console.log/** Copyright Stewart Allen <sa@grid.space> -- All Rights Reserved */
                 $('print-filename').value + ".gcode");
         }
 
+        function download_palette() {
+            console.log('todo');
+        }
+
         API.ajax("/kiri/output-laser.html", function(html) {
             let segments = 0;
             data.forEach(layer => { segments += layer.length });
@@ -454,6 +458,98 @@ console.log/** Copyright Stewart Allen <sa@grid.space> -- All Rights Reserved */
                 calcWeight();
             }
 
+            // in palette mode, show download button
+            let downloadPalette = $('print-palette');
+            downloadPalette.style.display = info.segments ? 'flex' : 'none';
+            // generate MAFX downloadble file
+            if (info.segments) {
+                // todo: reduce segments to eliminate 0 lenghts and transitions before 150mm
+                let { settings, segments } = info;
+                let { bounds } = settings;
+                let { min, max } = bounds;
+                let driveInfo = {};
+                let volume = {};
+                let length = {};
+                for (let seg of segments) {
+                    let seginfo = driveInfo[seg.tool] = driveInfo[seg.tool] || { length: 0, volume: 0 };
+                    seginfo.length += seg.emitted;
+                    seginfo.volume += seg.emitted * Math.PI;
+                    volume[seg.tool+1] = seginfo.volume;
+                    length[seg.tool+1] = seginfo.length;
+                }
+                let totalVolume = Object.values(volume).reduce((a,v) => a+v);
+                let meta = {
+                    version: "3.2",
+                    printerProfile: {
+                        id: settings.extras.palette.printer,
+                        name: "my printer"
+                    },
+                    preheatTemperature: { nozzle: [0], bed: 0 },
+                    paletteNozzle: 0,
+                    time: info.time.round(1),
+                    volume,
+                    length,
+                    totalLength: info.distance.round(1),
+                    totalVolume,
+                    inputsUsed: Object.keys(driveInfo).length,
+                    splices: segments.length,
+                    pings: 0,
+                    boundingBox: {
+                        min: [ min.x, min.y, min.z ],
+                        max: [ max.x, max.y, max.z ]
+                    },
+                    filaments: Object.keys(driveInfo).map(v => { return {
+                        name: `Color${v}`,
+                        type: "Filament",
+                        color: `#${v}0${v}0${v}0`,
+                        materialId: 1,
+                        filamentId: parseInt(v)+1
+                    }}),
+                };
+                let lastDrive;
+                let algokeys = {};
+                let algorithms = [];
+                let palette = {
+                    version: "3.0",
+                    drives: [0, 0, 0, 0, 0, 0, 0, 0].map((v,i) => {
+                        return driveInfo[i] ? i+1 : 0
+                    }),
+                    splices: segments.filter(r => {
+                        return r.emitted >= 150;
+                    }).map(r => {
+                        if (lastDrive >= 0 && lastDrive !== r.tool) {
+                            let key = `${lastDrive}+${r.tool}`;
+                            if (!algokeys[key]) {
+                                let rec = algokeys[key] = {
+                                    ingoingId: lastDrive + 1,
+                                    outgoingId: r.tool + 1,
+                                    compression: 0,
+                                    cooling: 0,
+                                    heat: 0
+                                };
+                                algorithms.push(rec);
+                            }
+                        }
+                        lastDrive = r.tool;
+                        return { id: r.tool + 1, length: r.emitted.round(2) }
+                    }),
+                    pings: [],
+                    algorithms
+                };
+                console.log({meta, palette});
+                downloadPalette.onclick = function() {
+                    KIRI.client.zip([
+                        {name:"meta.json", data:JSON.stringify(meta,undefined,4)},
+                        {name:"palette.json", data:JSON.stringify(palette,undefined,4)}
+                    ], progress => {
+                        API.show.progress(progress.percent/100, "generating palette files");
+                    }, output => {
+                        API.show.progress(0);
+                        API.util.download(output, `${name}.mafx`);
+                    })
+                };
+            }
+
             // octoprint setup
             $('send-to-octohead').style.display = octo ? '' : 'none';
             $('send-to-octoprint').style.display = octo ? '' : 'none';
diff --git a/src/kiri/init.js b/src/kiri/init.js
index c25825da..bfd13a89 100644
--- a/src/kiri/init.js
+++ b/src/kiri/init.js
@@ -641,14 +641,14 @@
                 let work = $('incwork').checked;
                 let json = API.conf.export({work, clear:true});
 
-                KIRI.client.zip([{
-                    name:"workspace.json", data:JSON.stringify(json)}
+                KIRI.client.zip([
+                    {name:"workspace.json", data:JSON.stringify(json)}
                 ], progress => {
                     API.show.progress(progress.percent/100, "compressing workspace");
                 }, output => {
                     API.show.progress(0);
                     API.util.download(output, `${name}.kmz`);
-                })
+                });
             }
         });
     }
diff --git a/src/mode/fdm/export.js b/src/mode/fdm/export.js
index c5247c06..db5847b1 100644
--- a/src/mode/fdm/export.js
+++ b/src/mode/fdm/export.js
@@ -822,7 +822,7 @@
         // force emit of buffer
         append();
 
-        print.segments = segments;
+        print.segments = isPalette ? segments : undefined;
         print.distance = emitted;
         print.lines = lines;
         print.bytes = bytes + lines - 1;
diff --git a/web/kiri/index.css b/web/kiri/index.css
index 2035015e..2b267147 100644
--- a/web/kiri/index.css
+++ b/web/kiri/index.css
@@ -1130,6 +1130,9 @@ th, tr, td, label {
 #print-download {
     min-height: 4em !important;
 }
+#print-palette {
+    display: none;
+}
 #code-preview-textarea {
     width: 40em;
     height: 12em;
diff --git a/web/kiri/index.html b/web/kiri/index.html
index 45c8c0ef..0d8c5e82 100644
--- a/web/kiri/index.html
+++ b/web/kiri/index.html
@@ -216,7 +216,7 @@
                     </div>
                     <div id="act-export">
                         <i class="fas fa-file-download"></i>
-                        <label id="label-export" title="generate downloadable files" lk="export">export</label>
+                        <label id="label-export" title="generate gcode" lk="export">export</label>
                     </div>
                 </div>
             </div>
diff --git a/web/kiri/output-gcode.html b/web/kiri/output-gcode.html
index 86f1e560..6e486572 100644
--- a/web/kiri/output-gcode.html
+++ b/web/kiri/output-gcode.html
@@ -20,6 +20,7 @@
 <div class="header"><label>gcode</label></div>
 <div class="f-row box">
     <button id="print-download" class="grow">download</button>
+    <button id="print-palette" class="grow">palette</button>
 </div>
 
 <div id="send-to-octohead" class="header"><label>octoprint</label></div>