It would be great, if we can have some form of "intelligent" warm up from the unused head before switching to it, to reduce print times. Cura has this feature.
Can't find something like this in S3D?
Tricks?
Re: 2 extruders warm up
Has there been any update in this? My Ultimaker 3 prints like a dream in Cura but literally like a nightmare in S3D because the unused extruder keeps oozing over everything. I believe it's because both extruders remain fully heated all the time. With Cura the unused cuts the filament supply immediately and cleanly once it has finished printing, especially if you have the retraction settings right. With S3D the retraction settings only buy you a few seconds until the unused nozzle starts oozing again, and in the case of nylon it's not even oozing it simply continues extruding. Indefinitely - as if it's slowly being fed.
I've read here that people recommend an ooze shield for dual extrusion but that doesn't help me much on complicated prints where the nozzles spend so much time inside the ooze shield that the unused nozzle has ample time to start leaking again and mess up my print, before doing its next pass over the shield. Furthermore, why should I have to use an ooze shield to catch filament from a nozzle that's supposed to be inactive for large parts of a print?
I've read here that people recommend an ooze shield for dual extrusion but that doesn't help me much on complicated prints where the nozzles spend so much time inside the ooze shield that the unused nozzle has ample time to start leaking again and mess up my print, before doing its next pass over the shield. Furthermore, why should I have to use an ooze shield to catch filament from a nozzle that's supposed to be inactive for large parts of a print?
Re: 2 extruders warm up
Here's a good post with some tips that I used:
viewtopic.php?f=8&t=6684
You can set S3D to turn down the temp after each tool change, or you can use the custom layer temperatures to turn it down permanently if you know you're going to have a long region where one extruder isn't used. So there's several options and you can pick what works best.
viewtopic.php?f=8&t=6684
You can set S3D to turn down the temp after each tool change, or you can use the custom layer temperatures to turn it down permanently if you know you're going to have a long region where one extruder isn't used. So there's several options and you can pick what works best.
Re: 2 extruders warm up
Thanks, I'll certainly give it a try.
On a similar note - if I'm only using one extruder for a print then the unused one still prints a prime line (not sure what to call it) even if it will never be used in the model. Is there an easy way of disabling that, either using a script of otherwise?
On a similar note - if I'm only using one extruder for a print then the unused one still prints a prime line (not sure what to call it) even if it will never be used in the model. Is there an easy way of disabling that, either using a script of otherwise?
Re: 2 extruders warm up
Patronus, are you using a prime pillar or ooze shield in the s3d settings? That's the normal method, and you can simply uncheck that under additions if so if you're only using one. You can then turn your other extruder off.
You're supposed to use the ooze shield to both prime and catch blobs from oozing. Definitely need to monkey with the idle temps as others are suggesting. It's taking me a month and a bunch of code scripting to make it work, but it will be worth it in the end. I've certainly seen clear finishes from it.
Sadly s3d is behind cura in making this work and be easier, but cura makes everything a nightmare so I will program my scripts by hand until they make it happen!
You're supposed to use the ooze shield to both prime and catch blobs from oozing. Definitely need to monkey with the idle temps as others are suggesting. It's taking me a month and a bunch of code scripting to make it work, but it will be worth it in the end. I've certainly seen clear finishes from it.
Sadly s3d is behind cura in making this work and be easier, but cura makes everything a nightmare so I will program my scripts by hand until they make it happen!
Re: 2 extruders warm up
Thanks for the response. I'm perhaps difficult but I don't want to use an ooze shield or prime tower simply to overcome an underlying problem in S3D. I get good dual-extrusion prints in Cura without it and was hoping that I could get the same or better efficiency from S3D (which unlike Cura is not free). Also, in my case an ooze shield won't work because the design in question is quite complex and the printer spends so much time inside the boundaries of the model that it gives the 2nd extruder enough time to start oozing all over my print, before it's time to cross the ooze shield again. I've tried the ooze shield in S3D and after a few layers saw that it won't help for the above reason. My example may be an extreme one but with both extruders fired up, the CoPA literally runs out of the extruder when not in use. Faster than the ooze shield can catch it. As I said in Cura this problem is almost non extistent because the unused extruder is cooled down and furthermore the fan kicks in the moment Breakaway starts printing thereby cooling off the unused nozzle fast enough to stop oozing immediately. On that topic, how do I achieve different fan speeds per nozzle in S3D?
I now accept that an ooze shield and prime tower is the prescibed way to do dual extrusion in S3D so I'll use Cura for that. But since I've had good results with S3D in a single extruder environment, maybe I can mimic that on my Ultimaker 3 by just not using the 2nd extruder. Easier said than done. Even when I switch everything off in S3D that may use the 2nd extruder incl skirt, brim, ooze shield, prime tower, even completely delete the 2nd extruder from the profile, S3D still heats up the unused extruder before printing and draws a thick line with it, and then never uses it again. That's a waste of energy, material and time and completely illogical to me. How do I get S3D to just ignore the 2nd extruder as if it doesn't exist at all?
I now accept that an ooze shield and prime tower is the prescibed way to do dual extrusion in S3D so I'll use Cura for that. But since I've had good results with S3D in a single extruder environment, maybe I can mimic that on my Ultimaker 3 by just not using the 2nd extruder. Easier said than done. Even when I switch everything off in S3D that may use the 2nd extruder incl skirt, brim, ooze shield, prime tower, even completely delete the 2nd extruder from the profile, S3D still heats up the unused extruder before printing and draws a thick line with it, and then never uses it again. That's a waste of energy, material and time and completely illogical to me. How do I get S3D to just ignore the 2nd extruder as if it doesn't exist at all?
