V3DPrinting

Hi to all I am not able to find the "limit support retractions" setting in the 5.3 or 5.3.1 settings. In 5.1.1, it's under the Travel section. (I don't remember in 5.2 and I haven't it installed anymore) I have currently an issue with a dual extrusion print (support interface is printed in Breakaway). To avoid having oozed breakaway in my print, it avoids printed parts, but as there is no retractions, Breakaway oozes and gets into the print. Previously, turning off the "limit support retractions" features solved that issue. But it looks like the feature is not anymore there in 5.3. Thanks for your feedback.

I found the problem : I was selecting the Marlin method instead of Griffin for an Ultimaker printer. Now it works fine. print head is parked on the front left corner and no unwanted retractions. Pause it seamless if using a second sacrificial object properly placed on the build plate.

Hi to all I have implemented a "pause at height" in a print job on an Ultimaker S5, but I noticed some weird behavior. The S5 is a 1st Gen printer running last 7.X firmware. Here's the script generated ;added code by post processing ;script: PauseAtHeight.py ;current layer: 635 M83 ; switch to relative E values for any needed retraction G1 F300 Z66.6 ; move up a millimeter to get out of the way G1 F9000 X320 Y230 M104 S0 ; standby temperature M0 ; Do the actual pause M109 S220 ; resume temperature G1 F9000 X216.454 Y121.439 G1 F300 Z65.6 ; move back down to resume height G1 F1800 ; restore extrusion feedrate M82 ; switch back to absolute E values So it should park the printhead in the back right corner, set the temperature to 0 then pause the print. After the resuming, it should reheat the Hotend to 220 and wait to stabilize. No extrusion move should be done (there was already a retraction at the end of the previous layer. The actual behavior is the following : - printhead is moved out of the part, then to the front left corner - temperature is set to 0 in the meantime - print job is paused - when resuming, a extrusion move is done, though the Hotend is cold -> severe grinding causing no extrusion when resuming. - printhead is moved to the back right corner - temperature is set to 220°C and wait to stabilize - printhead move to the last printing position - print job resumes. To make it short the pause is not usable. Quick feedback is appreciated.

Also I have realized that the 2 functions created by my vendor works fine except if I disable the extruder 1. Thanks for the link !

Hi @ahoeben Thanks for your feedback. Indeed {material_used,x} and {machine_nozzle_size,x} are in the Settings and replacement patterns list. I've used them. I have realized that {used_material,x} and {used_nozzle_size,x} are functions generated by a plugin or a script written by my vendor to accommodate IDEX on Cura. I need to go deeper in the implementation

I use some replacement parterns in my start gcode : {used_material,x) -> adds Tx Material used by the tool {used_nozzle_size,x) -> adds Tx Nozzle size used by the tool It was working fine with Cura 5.2.2. Upgrading to 5.3 has broken the replacement pattern for these two settings. Is there a way to fix it ?

I found the solution. It's linked with the way the BCN3D printer was defined. Implementing the BCN3D specific plugins (2) has solved the issue. Also I have realized that material modification are not in real time committed to the material file, but recorded into the current machine until you change machine or variant or material. So changes were not visible in the files just after the change in the GUI.

Hi @nallath I had some time to spend on that topic, so I've made some progresses Currently I have: - backported BCN3D Epsilon W50 definitions, extruders, meshes, quality, materials, variants into Cura 5.1.1. - modified the quality definitions in order to remove all the material related parameters such as temperatures, retraction settings, flow rates (otherwise the materials parameters are not properly taken into account) - created the necessary quality definitions for the materials I have from the marketplace - modified the material definitions to add the bcn3dw50 machine and variants (see attachments) so it should have dedicated values for the machine / variant. I still have an issue to have the materials updated when altering in the preferences panel for Epsilon W50: it doesn't alter the material definition as for the Ultimaker printers Did I missed something ? Thanks for your feedback generic_abs_06.xml.fdm_material.zip

@nallath Back porting the BCN3D printer to Cura 5.1 was very easy. Thanks I still need to recreate the necessary printers to mimmic all the IDEX modes and some other specific configurations.

Thanks @nallath that was my understanding. I will have a try

@nallath Thanks for your feedback. I am under MacOS, in the 5.x package content, under Ressources, I don't find the directories ressources/definitions or extruders. Does that mean I need to use the other way and put the files in the definitions or extruders directories under user settings folder ?

Hi to all I'd like to create a printer definition, as it is not listed in Ultimaker Cura 5.x. I already have the definition (machine, extruders, meshes, variants) from BCN3D Cura. But it's based on Cura 4.X I use Cura 5.x with plugins on my Ultimakers and like to keep it with for the others (only one material database, only one SW to manage, ....). BCN3D Cura has no plugins nor the last valuable improvements. I have already created custom printers to use Ultimaker Cura 5.x on my BCN3D Epsilon W50. 3 printers for Single mode (left extruder), Dual Mode and Duplication mode) and it's working fine. But BCN3D has changed the Epsilon's FW and the filament sensor is not working anymore. Previously, they used some comment lines in the gcode to activate the left / right filament sensor. I now suspect they also use the machine definition name in the end comments of the gcode. Having a custom printer means you have 'custom' in the machine definition name, instead of 'bcn3dw50' I've found the GitHub page on how to create a printer definition, but it's not for Cura 5.X https://github.com/Ultimaker/Cura/wiki/Adding-new-machine-profiles-to-Cura Any clue were I can find a similar page for Cura 5.X ? Thanks in advance

No. It has varied a lot and the latest are bigger than the ones in 2018, which were the smallest. That said, except in some very particular cases, as said in my post above, I don't have to complain with it. The most common problem with these hardcores is the PTFE wearing when printing a lot of high temperature materials (ABS, PC, ...) I have bought a spool of PTFE at the right diameters, made a guillotine to have a clean cut and some tools. I fix the hardcore within 15 minutes following the disassembly procedure posted by @gr5 some years ago.

Check also your filament. Some excessive moisture, though not noticeable when extruding is softening the PLA easily. Some brands / grades have a lower viscosity that may create the issue you have. For example ColorFabb Color On Demand in certains colors with high red and blue pigments have a lower viscosity

Is your enclosure closed or open during the print ? Air Manager ? Latest HardCores have a smaller cooling radiator, so lower performance than the Ultimaker PrintCores, so if your enclosure is closed with no sufficient cooling, with materials like PLA or PVA, you increase the risk of heat creep / jamming. That said, the HardCores are working fine for me for many years with all materials since that thread. I don't have any air manager station. The only serious issue I had was with PA CF where the moisture has created severe heat creep and jamming. Carbon fiber transfers very well the heat ....

Have you checked the printhead cooling fan ? The one on the front. Are you using an enclosure ? Looks like an heat creep due to insufficient cooling Other option is : your filament is not dry enough, so the melting temp has been lowered by the moisture and it's getting too soft, then enlarges in the PTFE tubing and creates a serious jam.

Are you printing some sort of carbon filled material ? PA CF ?

I had the same issue with 3d Solex Hardcore on my S5. It was linked with the spring being too weak and the seating of the print core in the printhead. Checking the spring length and extending it a bit has solved the problem for me

As I swap quite often printcores and material, I have the leveling frequency set to Always. To be honest, I don't see the point of using the Active leveling when set to Never, and a Factory reset + Manual leveling is the best option then.

@upatamby I am using the FW 5.2.17 on 2 UM3E since it has been issued. That have fixed my dual extrusion issues. And I print a lot in dual extrusion and a lot as it's my business. I can confirm that the FW is working fine. But active leveling is not only FW, HW is also involved and may have a significant impact. Have you checked the print cores springs ? If the spring is too weak, then the z offset for that printcore would be too high during the active leveling procedure, therefore it would print too low. Maybe a first test would be to swap your printcore 1 by another AA printcore. You can also do a test on a scale : you hold the printcore by its body and press the nozzle on the scale until it starts moving. Then note the force applied. It should be somewhere above 0,9 kg for a genuine printcore, to be confirmed by @gr5 Have you checked the buildplate height against the printbed frame ? It should be 14 mm or so. Make a search on the forum, you should find some gauge for an easy adjustment. If the distance is too high, the springs would not be compressed enough and the build plate would move when doing the active leveling. Same result as for the printcore spring. Also checking the sensor would be a good thing (in maintenance menu).

Hi John If I remember well the history, the version 5.2.17 fixes the leveling issue for UM3X (that's the version I'm on with my two UM3X), version 5.2.18 fixes another bug related to the display, but nothing more.

I've stopped upgrading my UM3E printers, as nothing new under the sun except that bug fix. So still in 5.2.17 and I won't upgrade them anymore for the time there is no compatibility issues with my S5 as a group host or Cura.

@gr5 the working versions on UM3E regarding that issue are 5.2.17 or 5.2.18 Downgrading to 5.2.11 will not solve the bug.

Sorry ! Duplicate post, something went wrong with my browser. Can you please delete it ?

Hi to all Maybe the subject have been already discussed, but I haven't found an answer yet. Here's my question : I have different type of printers : Ultimaker 3 Extended, Ultimaker S5, BCN3D Epsilon W50 and custom based on RRF (Duet3D) I am currently using Cura 4.11 as a single slicer for all those printers, sharing the material database together and benefiting from the plugins and latests releases. (For those who are interested in how to use standard Cura for BCN3D IDEX, please PM me.) Material parameters like Temperatures, Retraction settings, cooling have to be personalized per printer type. For the Ultimaker family, it's well done and you have a set of parameter for the UM3X and for S5. Is it the same for the custom defined printers ? Are these parameters individualized per machine ? I ask the question because all the print profiles for custom defined printers are available when a custom printer is activated. Thanks for your feedback !