inventabuild

This I find very interesting: "A new fan shroud with improved airflow. The fans are mounted horizontally instead of tilted." Is Ultimaker saying it is better to blow down on the part rather than across the part? Does blowing down give a better finish on the perimeters and is it better at eliminating stringing with PLA?

Hello, It's been quite a while since you posted your request. Have you found a slicer that works the best with your plan to prime-with-infill instead of prime-with-a-prime-tower? It seems to me this functionality is critical to make multi-input single-output nozzles like the e3d Cyclops more efficient time-wise and material-wise. I have the e3d Cyclops and my print times can more than double when I need to use a prime tower to purge the old color out of the nozzle. Purging out the old color with infill solves this problem big time. I'd be interested to know if you found a good way to implement this with a particular slicer or any other way. Thank you.

So here it is on my TAZ 4. I added the two black side fans you see on left and right sides. Note the two sets of allen head screws in vertical alignment w/ the nozzles. Both nozzles are pretty much the same height to begin with, but to fine tune them against each other, level the lowest of the two with the bed, then loosen the two allen head screws of the higher nozzle and lower it till it's the same height as the first one. It's very easy to do. Note the nip of the heater cartridge barely sticking out horizontally to the left from the right nozzle. There's another one on the back side of the other nozzle. When you insert the two nozzles into the heat sink (the big rectangular silver thing) they align themselves against each other with the heater cartridges being the "door stops". You do have to find your x and y offsets one time w/ a calibration print, but after that, even if you pull the nozzles out for some reason, (at least from my experience) you can put them back in the same way so your x and y offsets pretty much stay the same. Of course with the Cyclops you just level the one nozzle w/ the bed, but it's considered experimental even by e3d standards and I kinda wanted to be up and running w/ out going through too many experiments; hence I went w/ the Chimera.

best thing to do if the resources are available is by a backup power source. the lights might be out but at least the printer is still going

the line "G1 Z20 F9000 ;Raise Bed to Head" raises the bed after it is already homed to 0 with the gcode G28. I think that line of code needs to be changed or deleted.

No dual extrusion support for the new Cura is ashame. I modded my printer with the new E3D Chimera dual extruder hot end and it is extraordinarily easy to level the two heads and set the x, y offsets so parts come out clean and nothing gets knocked over on the bed. I was kinda hoping (new Cura) = (old Cura) squared both in terms of power and capability.

I am wanting the slicer to automatically recognize when the 2nd extruder is no longer needed for the print and turn that extruder off completely for the rest of the print and stop building the Ooze Shield w/ the retired extruder because all that does is create unwanted strings on the print. There s/ be no user interface intervention required, the gcode should automatically be generated at the slicer level.

The Cura designers should add the ability to recognize when the 2nd extruder is not needed anymore for the print and turn it off so it stops building the Ooze Shield. Currently Cura continues to build the Ooze Shield with the 2nd extruder when it's not needed anymore for the part... just wastes time and material and adds unnecessary strings to the part.

Hello dim3nsioneer, Both fields in Dual Skipping 1.0.1 have a 1, but the Plugin did not suppress the printing of the Ooze Shield. Both extruders are printing the Ooze Shield, including the extruder that is no longer needed for the print.

Awesome, are the the Dual Skipping fields for Layer no., Z height or ? Lastly, is Extruder Idle to be used only when the extruder is no longer needed for the build?

After a layer I like to move my hot end to hover over the Ooze Shield while the retiring extruder cools down and the new extruder warms up for my dual extrusion parts. This prevents bad strings from occurring as the retiring extruder moves back over the print. If it's still a little bit warm it can string onto the print. Is it possible to update Cura or write a plug in that allows users to run g-code when the extruder moves to the Ooze Shield? It would be a big help. I currently have to use KISSlicer when I want to do this, but I'd like to do this in Cura.

Also, is it possible to put a Starting Layer no. / Ending Layer no. in TweakAtZ?

I think I could live w/ one instance of TweakAtZ if it would mean adding a powerful feature. What is "specification of an end layer"? Also, can you add a second fan for TweakAtZ?

Does Cura recognize NextX and NextY g-code variables for positioning the hot end. When dual extruding and I'm cooling down the retiring hot end and warming up the active hot end I would like to position the hot end over the Ooze Shield to minimize oozing on the print. Doing this w/ NextX and NextY would make this possible. Are these variables currently available. If not, can the Cura developers please add this functionality?

Cool, please let me know when it's ready to try out. Thank you.

Cool, will it kill the Ooze Shield too? I run the Ooze Shield and Cura will turn on the no-longer-needed extruder to print the Ooze Shield if you can't kill it.

No, it's a different (unpublished) one. How do I acquire it for testing?

Also, the ability to define how far away the Ooze shield is from the part would be helpful.

My Cura preExtruderSwitch and postExtruderSwitch windows have warm up and cool down g-code in them. I cool down the retiring extruder and warm up the active extruder for the next layer. This eliminates oozing from the retired extruer. So I'm guessing this preExtruderSwitch and postExtruderSwitch code will kick in whether I turn off the 2nd extruder with the plug-in as suggested earlier or if I enter it manually as you did. I can settle for the 2nd (no longer needed) extruder staying at it's cool down temp for the duration of the print; however if I use the Cura's Ooze shield it will turn on the no-longer-needed extruder to create its Ooze shield layer and along w/ it comes some strings of the no-longer-needed color on the top layers of my print. KISSlicer recognizes when the 2nd extruder is no longer needed. It's sets its temp to "0" and no longer builds a "Wall" / Ooze shield w/ it. I'd rather not have to create my own Walls / Ooze shields in a CAD program every time I want to print something. I design some of my own stuff, but sometimes I want to / need to print out other people's stl files and it creates an extra time consuming step to have to model my own Ooze shield in a CAD program every time I want to print something. I wish Daid would modify Cura to stop printing the Ooze shield w/ the no-longer-needed extruder as it takes extra time, wastes filament(?) and creates strings of the wrong color in the print.

How did you manually turn off the 2nd nozzle after the blue was not needed anymore in the g-code? Did you open the gcode, find the layer and enter the line M104 T1 S0?

eldrick, Do Tokens / Keywords exist for Cura? Also, is there a list of the variables that Cura uses. For example I can use M104 T0 S{print_temperature} to set the temp of extruder 1 and M104 T1 S{print_temperature2} to set the temperature of extruder 2. Where is there a list of the variable names that shows {print_temperature}, {print_temperature2} and the other variables that Cura uses. I would like to know the variable names so I can use them in my Cura g-code.

Is there a list of Cura's Tokens / Keywords that I can use in my preSwitchExtruder.gode, postSwitchExtruder.gcode, start2.gcode and end2.gcode? I found some of them like "{print_bed_temperature}" for example. A complete list would be helpful for customizing my code to improve my prints.

Are you referring to "Tweak At Z 3.2" ?

dim3nsioneer, Yes, exactly like that.

Thank you for the answers. If I'm using the Ooze Shield then Cura will use both extruders to build the shield till the end of the print so I can never completely turn off the not-needed-anymore extruder. I created gcode to lower the heat of the non-printing hot end using the pre/postSwitchExtruder sections; however sometimes strings are left on the part when a hot end prints and travels away from the Ooze shield. When one of the extruders is no longer needed to finish a print then unnecessary strings are being created due to just printing the Ooze sheild. It would be nice if Cura was smart enough to realize when one extruder is no longer needed and just finish the Ooze shield with only the extruder needed to finish the part. Then I could turn off the not-needed-anymore extruder when its layers are completed and eliminate its strings on the part. Allowing us to build our own n-layer skirt walls with each respective extruder would solve this problem for me because I could just build the skirt walls as high as needed and stop building the skirt wall for the not-needed-anymore extruder when it's completely done printing its share of the part.