installed bi metal volcano nozzle and my prints will run for anywhere between 1 minute and 2 hours.
I can’t for the life of me figure out how to get my rr to print without stopping. I installed this cht bimetal volcano nozzle and also tried the factory rapido volcano and have had zero luck. I’m printing usually 150mm/s with a flow rate of around 12-15. Filament choice doesn’t seem to matter…. Cheap, high end, middle of the road… every single thing I feed this machine it starts out good for a bit and then quits feeding filament. I installed the orbiter 2.0 and that hasn’t seemed to fix anything. I keep my temps in the 215-220 range and that was just based off a flow rate test I did. I guess what I’m asking is if anyone can give me some tips…. I’m just at a loss.
Solution:Jump to solution
if you have the orbitor 2, you want this line uncommented
https://github.com/Rat-OS/RatOS-configuration/blob/v2.x/templates/v-core-3-printer.template.cfg#L140...
34 Replies
Maybe heat creep? Double check the hotend fan
I think lowering retraction might help too, not pulling molten plastic higher
Ok I checked the hotend fan and it appears to be working well. I haven’t tried lowering retraction. Mine says .5 on the mainsail front screen. I’m using orcaslicer and I haven’t had much of anything be successful. I have tried simplify and had better results with that but I can’t imagine this is a slicer issue.
I had a similar issue on my ender clone, never did solve it. Ordered a new hotend and building a HeroMe ducting/mounting thing around it now
Next time it happens try and feed it by hand. If it feeds normally then something with the extruder. If you are having trouble feeding by hand, something is wrong with the hotend.
Depending on if hotend vs extruder then you can try and narrow it down further. Like disabling retractions to see if it is heat creep. Or playing around with temperature. Or trying a different nozzle
Problem with feeding by hand is the issue might not show up for hours
no, feeding by hand AFTER the issue has shown up
i.e. trying to reduce the search area. Is it a extruder issue or a hotend issue. then using that to look at possible remaining causes
Ohh, hmm
In my case after disassembly there was always moleten filament higher than it should have been
yeah without more info from the OP we can't assume that is the same issue here
Mentally working my way through what that could mean for trying to test it by hand at the time...
Yeah
I have seen people have issues with their wiring which caused intermittent issues, so trying to rule that out
So I started another print late last night and slowed it down quite a bit. Put max velocity to 150 and max volumetric flow to 15. Lowered temp to 215 and as of right now it’s still printing fine. I wonder if the cht just can’t handle higher than 15.
you might want to look more into flow testing like what vector3d did
https://www.youtube.com/watch?v=rrz3bbsnMUI
I know cnckitchen also did some work on this as well and has a less automated way of doing the calculations
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but something seems wrong if you are only getting 15mm flow. Even my under powered mosquito clone can do 12mm flow with a plain copper nozzle.
I’ll look into this but yeah I was also thinking that under 15 flow was nuts. This is a volcano too.
Seems like with my standard nozzle I have better luck than with the volcano.
I’m printing pla. I tried some elegoo rapid pla too which is supposed to be for high speed and that wasn’t any good.
yeah I mostly print PLA too
just standard length nozzle
but as you increase speed and volume, you need to increase your temps (even above recommended temps from manufacturers)
The orbiter 2.0 is kind of weird to me. Like if I tighten up the spring for filament it will skip and if I loosen that same spring it will skip…. It’s got to be like 2-3 turns in!
those recommendations are usually for a ender3 type machine
that doesn't sound right
Mine has a wide range of acceptable tightness.
I command it to extrude, and then slowly increase the tension until the filament starts getting pushed. Then I do like another half turn. But if I continue it will still print all the way up to just before full tightness
I didn't adjust mine out of the box
you didn't unscrew the setscrew to load filament?
Theres a setscrew?
I am not sure about said screw either.
You mean the one with the spring?
Mine for sure will start printing after maybe a turn and then for another 1-2 turns max but then I can turn it two to three more times after that and it won’t feed.
correct, the one with the spring on it
yeah, if you screw it in too tight it deforms the filament and then has a tough time going through the heatbreak tube (my understanding is the rapido is very fussy about this)
Ok that seems to be what I’m experiencing. It almost doesn’t have enough strength to pull the filament from the spool which is even on rollers and like 18” from the extruder.
What hotend do you use?
its called the "nf crazy" but really it is a mosquito clone from china. Do you happen to use a reverse bowden tube for feeding the filament? If so, what is the inside diameter of that tubing?
So I was using some with a 2.5mm inside diameter but even that seemed to cause too much drag and so I completely removed it last night.
I wouldn't recommend the "nf crazy" though, I got it before the rapido existed. And even without rapido, there are better designs out there now
weird, maybe you have a lot of bends in the route?
I wonder if I selected the incorrect orbiter in my printer configuration.
which one did you select?
Zero bends….. straight shot
I picked the first one listed but below that one there was some connotation about a different motor.
https://github.com/Rat-OS/RatOS-configuration/blob/v2.x/extruders/orbiter.cfg ?
if so, that one has HALF the run current (strength) as the others
The first one is half the strength????
Solution
if you have the orbitor 2, you want this line uncommented
https://github.com/Rat-OS/RatOS-configuration/blob/v2.x/templates/v-core-3-printer.template.cfg#L140
I am almost 100% certain that’s the problem. I uncommented the first one.
I was wondering how it could be so weak.
I’ll try and report back.
Will be a few hours because I kinda want to see if this current print finishes….. it’s a Darth Vader helmet my kids really want….. they’d be bummed.
That was it!!!!!! Wow thanks again!!!!!!!! I really am starting to rack up quite the debt to you!!!!!!!!!
as always, just pay it forward. We all stand on the shoulders of giants who have given to us before