I’ve stugglefd with filament replacement too. Here are the things that have helped me a ton:
Make sure you’re using Luban instead of snapmakerjs, it has a digital load and unload option on the Machine screen, which makes loading and unloading a TON easier. Not sure what they were thinking with that hardware button, but it’s the worst.
Though I’ve been told that you should cut the filament at 45 degree angle, I have a 3D pen and it instructed to cut the end blunt, so I tried that on the printer and found that was a lot easier to work with for loading.
I keep a heat gun (a blow dryer will work or even a lighter) near my printer, to warm up the last 3 -5 inches of the filament and straghten it out, getting as much of the roll curve out of it as possible - even a slight curve and throw off the load due to the pivot point touching the sidewall, pushing the tip away from the opening. Leverage baby! Only not in a good way. heh
- Use Luban and the digital load/unload options
- Cut the end blunt instead of pointed
- Warm up and straighten the last few inches to remove any curvature
Hope this all helps you going forward! I’m a total newbie, so please take any advice i give as that coming from a total newbie whose just learning to solve these same problems and maybe completely wrong about any and all advice she is giving.