Struggling with Rapido (v1). Not extruding unless temps are stupidly high.
Hi there. Just a quick question regarding the Rapido (v1). I'm on my second rapido and it has been working well (500 hours). I'm starting to struggle to push filament through it. I removed the filament and the nozzle. Looked through it and everything is clear. Filament can be pushed through it quite easily, no rubbing against the metal tube etc. I fitted a brand new bondtech cht nozzle and I've put on a new roll of PETG filament. Freshly opened. When I heat everything up, my normal temp on this filament is 245c. I can easily push 25mm3/s with this filament. It's my standard volumetic speed for a good quality print. However, for the past few days I cannot for the life of me get more than 10mm3/s out of it. Regardless of filament. I need to put the temp up to at least 260. Same with PLA. Cannot push pla through the nozzle at 240c. I replaced my orbiter and extruder to a brand new one. Same issue. I've tried replacing the small tube between the extruder and the hotend. Made sure it is a clean cut. Made sure filament can flow through the tube and into the hot end with no friction. But still, cannot push more than 10mm3/s. If I heat the extruder up and extrude 100mm of filament at 4mm/s, all I get is the extruder skipping. I have double checked the nozzle temp. I have 2 temp guns. Both are reading the nozzle is what I expect it to be.
3 things scream out to me.
The filament isn't getting heated pre nozzle. It's like it's still cold until it hits the nozzle.
Maybe I've accidentally stripped the thread for the nozzle and the nozzle doesn't sit straight? It looks and feels fine to me. The new nozzle actually screwed on pretty freely by hand. Hot tightening didn't feel any different to other times.
Possible software issue where the maximum volumetric flow rate in super slicer isn't working? I'm using the latest main release that isn't a beta.
Any help would be appreciated! I hate that my standard revo is putting out more flow than my rapido 😦
2 Replies
passive-yellow•10mo ago
Hey, I have the exact same problem on my V core 3, and even after switching the whole hot end assembly I still have the same issues, I think it comes from the extruder or it's motor skipping because it's teeth are too worn (in my case I've been printing for a few hundreds of hours). You've posted this a while ago so I'm hoping you found the solution yourself but just in case you haven't, that's how I fixed my printer
Basic question building on from that, have you checked e steps?