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Ultimaker / Cura

3D printer / slicing GUI built on top of the Uranium framework
GNU Lesser General Public License v3.0
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there is no option for dual extruders and only one nozzle #5030

Closed surfettekw closed 4 years ago

surfettekw commented 5 years ago

Application Version 3.6

Platform Windows

Printer Geeetech A10M

Steps to Reproduce Anytime I try to print from extruder 2 Cura doesn't heat up element because it is looking for element 2 but I only have one shared nozzle.

Actual Results Bed heats, element does not and it tries to print

Expected results Would like a way to make it so that Cura can understand two extruders one nozzle.

Additional Information

nallath commented 5 years ago

Well, no Ultimaker printer has this, so it's not very likely that any of the UM devs are going to spend time on fixing this. Even if we would, we also don't have a machine to test it with.

antman2 commented 5 years ago

@surfettekw Have you tried printing the model with extruder 2 and just a skirt with extruder 1?

surfettekw commented 5 years ago

I will try that again when I am not so short on time :)

Sent from XFINITY Connect Mobile App

------ Original Message ------

From: antman2 To: Ultimaker/Cura Cc:Kathi, Mention Sent: December 22, 2018 at 6:51 AM Subject: Re: [Ultimaker/Cura] there is no option for dual extruders and only one nozzle (#5030)

@surfettekw(https://github.com/surfettekw)Have you tried printing the model with extruder 2 and just a skirt with extruder 1?

— You are receiving this because you were mentioned. Reply to this email directly,view it on GitHub(https://github.com/Ultimaker/Cura/issues/5030#issuecomment-449571738), ormute the thread(https://github.com/notifications/unsubscribe-auth/Aeyf5UAnevS4XCJYXVGI1MRIbg_M9n79ks5u7jjigaJpZM4Zcfsp).

antman2 commented 5 years ago

@surfettekw I've had an opportunity to try this lately with a Tronxy X5S-2E which is a dual extruder single hotend setup like yours. The Tronxy runs Marlin 1.1.0-RC3 firmware which, unlike Marlin 2.x firmware, doesn't really understand multiple extruder single hotend printers.

When switching from the second to first extruder Cura sends M109 T0 S{material_print_temperature} followed by M109 T1 S0, but the second command turns off the shared heater so the hotend cools and eventually it is unable to extrude.

To keep the hotend hot when switching between filaments you need to edit the printer's profile to add either an M104 or M109 command to the second extruder's "Extruder Start G-code" but specify T0 (which is the first extruder as far as the printer is concerned).

Example 1:

M104 T0 S{material_print_temperature} ; Set 1st extruder temp, don't wait

Example 2:

M109 T0 S{material_print_temperature} ; Set 1st extruder temp, wait for target temp

This works for me when only wanting to print with the second extruder, too.

Ghostkeeper commented 4 years ago

Newer versions of Cura have an option in the Printer Settings dialogue called "Shared Heater" to address this issue.

mirecta commented 3 years ago

Shared Heater - where it is i have daily builds and it not found

fvrmr commented 3 years ago

Hi @mirecta it is still there as a machine setting, but not visible. You can find more here: #8148