We can now move on to loading the filaments in and printing the test object! But first;
⬢Please prepare at least five different PLA filaments and cut off the ends to form a round sharp tip on each - as seen in the picture.
⬢The filaments must have a sharp tip in order to load properly into the MMU as well as into the printer. If the tip is deformed, bent or larger in diameter, it won't load properly.
⬢Inspect the last 40cm (15") of each filament. Make sure there are no dents in it. Sometimes, if filament got jammed before, the pulley wheel makes an indent in it. This part of the filament can no longer be grabbed and moved by the MMU unit and must be cut off.
⬢If the filament end is bent, straighten it. It must be perfectly straight.
Use only high-quality filament with guaranteed low diameter deviation. In case you have filament loading / unloading issues in the future, re-visit this step as well. Make sure the filament is dried up. Moisture-sensitive filaments can be problematic during the MMU operation.
This section really needs a better description of what loading etc should look and sound like. mine jams and spits the filament backwards and forwards. Draws it in but then the selector rattles and makes staccato noises. I have no idea what is correct or what is a jam. How far is it supposed to go in when it first loads (All the way down to the extruder or just into the selector?) and should it be pushing it partially back out? Is that where it sits when not being used or should the filament be further in? all five filaments are doing something different every time and i have no idea which action is correct.
Yes. The calibration is recommended everytime you move the printer or addons, but also when we calibrate items here before shipping, we erase the settings and a new calibration is needed.
You can use just long pieces for calibration. And you will ask the MMU to load filaments, so the MMU will know about them. But beware, you can unload filaments just by unrolling them and the MMU will not know about it.
You can use the filament to check if all parts of the MMU are working as intended, but for the print, you can load only the filaments you need. But we could talk here more and more about the MMU :-) But if you still have questions, you can talk to our support team via livechat ;-)
There should be a 5 color option for the sheep. Not much of a first flight if you only check two of the colors. Especially since each one of the filiment pathways needs to work in order to function.
I had poor luck trying to create a sharpened tip as described here. Instead, I found that a very long angled cut along the length of the filament (basically a long 45 degree) single cut allowed me to easily load all 5. Look at the recommended filament tip cuts for the Prusa Mini and that is how I cut mine.
mine jams and spits the filament backwards and forwards. Draws it in but then the selector rattles and makes staccato noises.
I have no idea what is correct or what is a jam.
How far is it supposed to go in when it first loads (All the way down to the extruder or just into the selector?)
and should it be pushing it partially back out?
Is that where it sits when not being used or should the filament be further in?
all five filaments are doing something different every time and i have no idea which action is correct.