Buffering

I’m not taking about streaming from Youtube here. I’m talking about how to deal with the retracted filament from the MMU2S. The Prusa supplied buffer works, I have had no issues using it at all. My only issue is the amount of space I have available around my MK3s. I can only set my filament spools in front of the printer. The Printer itself lives in an enclosure and not one of those over engineered LACK table mods, it’s more of a rought plastic bag tent. So I have no choice and have to front load filament and this has caused a problem with the location of that prusa buffer and the amount of space it needs.

After a little research and printing a more compact buffer that I found online which didn’t really work too great I found the RMU Buffer from filamentbuffer.co.uk. Its not a free and opensource which is a small dissapointment but reviews have been prettu good. I parted with some cash and using a discount code I managed to get a pretty good deal I set about printing the downloaded files by. The main advantage of this buffer is its compact and only increase the printers footprint by a small amout and it also attached to the printers frame making it pretty solid. The Prusa Buffer by comparision is currently taped with gorilla tape to the side on the enclosure, not ideal and difficult to load filament through.

The RMU buffer spools the retracted filament back inside it’s body. There is no chance it will become tangled around the other spools which is something I see sometimes from the Prusa buffer. When the filement is then pulled back in to the MMU and through to the hotend it is pulled back out of the RMU buffer and around the large idler wheel giving it a low friction path.

This is by far the best solution, it’s compact and attaches to the printer. The only downside is it’s a bit awkward loading filament having to fight against the PTFE tubes. If like me space is an issue seriously consider the RMU or similar style buffer.