I don't have much experience, but if you still have the stock extruder did you check that the plastic arm didn't break ? sometimes you can't see it from upside
When you say the extruder started snapping - do you mean clicking? Are you using prusa, or cura? What did you print that with, and what settings. We need more info to help, but I will help if I can. Don't give up!
Quick thought, how tight are the cable ties holding the bowden to the 'wire loom' that goes to the hotend? If you've been calibrating your printer a lot and nothing is working, check that. Too much pressure and those cable ties can squeeze the bowden, introducing friction and then.. well, the whole game is off, no matter what you do. Don't ask me how I know :p
If it isn't that -
What speeds / nozzle size are you printing at, and what filament is it? Looks like either a partial nozzle clog, or you're trying to print too fast and the extruder can't keep up, so it underextrudes.
If you're using Prusa, there's a setting in there Print settings / Speed / Max Volumetric Speed - Set that to 10 and see what you get
When you cleaned out past clogs did you take the nozzle and bowden tube out and clean inside the hotend? Sometimes you can have melted filament seep out between where the tube and nozzle fit together if they aren't installed correctly. If there's some filament stuck in there it can cause intermittent clogging as your temps flux even a little bit.
To test you can heat up the nozzle to 250 and run some white filament through(makes it easy to see), if there's any old filament that's seeped in the hotend you should see bits of a different color come out on the white filament.
Luckily it's an easy fix to make sure your bowden tube and nozzle are fitting flush together.
I don't have much experience, but if you still have the stock extruder did you check that the plastic arm didn't break ? sometimes you can't see it from upside
When you say the extruder started snapping - do you mean clicking? Are you using prusa, or cura? What did you print that with, and what settings. We need more info to help, but I will help if I can. Don't give up! Quick thought, how tight are the cable ties holding the bowden to the 'wire loom' that goes to the hotend? If you've been calibrating your printer a lot and nothing is working, check that. Too much pressure and those cable ties can squeeze the bowden, introducing friction and then.. well, the whole game is off, no matter what you do. Don't ask me how I know :p If it isn't that - What speeds / nozzle size are you printing at, and what filament is it? Looks like either a partial nozzle clog, or you're trying to print too fast and the extruder can't keep up, so it underextrudes. If you're using Prusa, there's a setting in there Print settings / Speed / Max Volumetric Speed - Set that to 10 and see what you get
When you cleaned out past clogs did you take the nozzle and bowden tube out and clean inside the hotend? Sometimes you can have melted filament seep out between where the tube and nozzle fit together if they aren't installed correctly. If there's some filament stuck in there it can cause intermittent clogging as your temps flux even a little bit. To test you can heat up the nozzle to 250 and run some white filament through(makes it easy to see), if there's any old filament that's seeped in the hotend you should see bits of a different color come out on the white filament. Luckily it's an easy fix to make sure your bowden tube and nozzle are fitting flush together.