I searched this forum and FB groups, but couldn’t find an answer.
The bambu refillable spools have an arrow on them. I think it means the way the spool twist together, but not sure. Is that the direction the filament should flow?
Does it matter which way the refill filament is on the spool.
You can’t really insert it the wrong way - there’s a notch on only one side. If the cardboard spool just slides on, you’re doing it right; if you have to force it, you’re doing it wrong.
Just one very important thing: Cut the strips at the very end - never, and I mean never ever, before that.
Here’s a video about it: Also, listen for the pretty loud click when the spool locks into place.
Also, print a bunch of these.