Palette 2 Filament Buffer Runout Switch

thingiverse

Many prints failed on my Mosaic Palette 2S as the Filament Buffer inside is to small, if I print over [63mm/s in average]([https://www.youtube.com/watch?v=8NZ-QnqrD3U&t=534s) between two sclices. Sometimes a splice happens directly after an pong which would drain the buffer completely. Using the Parameter "Enable Print Speed Control During Splices:" inside the Pallete 2 OctoPrint plugin might help if you are willing to slow down the speed. I've been quite happy with my Palette 2 on smaller, detailed prints with a lot of color changes. Bigger Prints with small as [this one sized on 250%](https://www.thingiverse.com/thing:2350630) failed for me many times during this issue. There are other options to prevent this issue as adding an [external filament buffer](https://www.thingiverse.com/thing:3548274), but I was not willing to print this huge thing which did not fit on my Printer/Palette configuration. [This ting is an external runout detector](https://www.youtube.com/watch?v=pswVC0_DxcA) with a small filament buffer of 2mm just enough to slow down my printer using the [M412 - Filament Runout](https://marlinfw.org/docs/gcode/M412.html) command. I modified my Firmware to reduce the speed to 5% when the filament runs out. <p> #define FILAMENT_RUNOUT_SCRIPT "M220 S5\nM412 R" </p> The option "Enable Print Speed Control During Splices:" inside the Pallete 2 OctoPrint plugin will increase the speed-up to 100% after the splice is finished. "Enable Print Speed Control During Splices:" Normal Feed Rate: 100% Splicing Feed Rate: 100% <- feel free to reduce it to your demand. Things Used: (non affiliate!) [Lerdge Optical Endstop](https://www.aliexpress.com/wholesale?SearchText=lerdge+optical+endstop) [Brass Insert M3x3 OD 4.3](https://www.aliexpress.com/wholesale?SearchText=brass+m3x3) Round pneumatic coupler ID 6mm OD 10mm Round pneumatic coupler ID 4mm OD 8mm Spring: Lenght 42.5mm OD 10mm ID 8mm (from my local OBI Hardware Store) Some silicone grease