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Ultimaker Community of 3D Printing Experts


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  1. Thank you, Nalath, for the background information. Very appreciated. Similar experience with a company I'm working for... as soon as there's a safety audit, you can be sure, they'll find something and turn your office into a kindergarden where people have to use dangerous workarounds in order to accomplish their daily work. Best strategy is to evenly distribute hundreds of safety hazards across the office so the auditors get distracted and with some luck only find some minor ones. Just kidding (...kind of). Hm. Strange. Maybe because I normally don't do an upgrade, b
  2. With your background in firefighting I can understand your point. Still I don't believe it makes a lot of sense to have some random limit and don't provide a way to override it that doesn't require creating your own printer definitions from scratch for semi-closed source machines. For me THIS is a safety issue... who knows what else I, as a simple printer operator, could mess up with these def files? And if that teenager you mentioned before would really be into aluminum wire extrusion and home combustion, he'd most probably reckoned that there are various alternatives
  3. IMHO it was a really bad decision to set a hard limit on the nozzle temp. HT printers are getting more and more common these days and that 365°C limit is kind of arbitrary. IF one normal printer (without a reasonable FW limit set) would be operated at 350°C or 360°C doesn't matter. It would probably be dangerous to the same extent in both scenarios. And overriding the limit is really a PITA. I'm testing a lot of cura versions and different printers and constantly I have to set up new printer definition files + no-limit extruders. It's not documented (at least not in a way I as a no
  4. I have no issues with updating from 4.8 on Win10. Went smooth as it can (nevermind the quirks I have to deal with in order to unlock printing temperatures of >365°C). One thing however I noticed is the machine settings dialog (start/end g-code section) has shrunken down way too much. The machine settings menu has always been a bit neglected from a usability point of view IMHO but this time it's worse than ever. See my screenshot with 4.9 on the left and arachne alpha (would be the same on 4.8) on the right. Since this menu can't be resized I'm stuck to those 1-liners as you can
  5. It's a rather difficult filament to print and requires an all-metal hotend but I really love it for it's properties and look (specifically the blueish transparent one). And since it's crystalline PET you can anneal it afterwards to increase it's stiffness and temperature resistance which makes it pretty versatile. General print settings that work well for me are very similar to PET-G settings (slightly underextrusion, slow and steady print speed, 70°C bed temp, low fan speed or none at all, etc...). Where it differs are print temperature (260°C on my printer) and it's tendency to c
  6. I use their polycarbonate filament. It's a rather pure PC without many additives which gives superb technical properties but is harder to print than some other highly modified PCs (polymaker for example).
  7. Hello there, I'm trying to gather some information about manufacturing UL(94) recognized parts and it seems that the cheapest option is the UMS5 with novamid. There are a few processing parameters that a manufacturer has to pay attention to and therefore I'd like to know if Ultimaker provides cura profiles tailored for bluecard conformity. Also I'd like to find out how to read the "post process method" section. In the UL file ( https://iq.ulprospector.com/en/profile?e=601705 ) it says "none". Does that mean that I'm not even allowed to remove support? Which would basica
  8. Attached you can see all the vertices that are non-manifold (in orange). It's too much for a quick manual fix for me at the moment but anyone familiar with blender can get it done in 10-30 minutes.
  9. What a bummer... but thanks for the answer. Do you by chance know what I have to edit in the machine definition to make cura accept higher temperatures for this custom printer? This is my definition file which I found in .../AppData/Roaming/cura/4.6/definition_changes (don't know if this is the right file in the right place; I believe not - but there's no file for this printer in Program Files\Ultimaker Cura 4.6\resources\definitions where I'd expect it to find) [general] version = 4 name = P220_settings definition = custom [metadata] setting_version = 13 type = definit
  10. You can try playing around with the mesh-fixing options in cura. But generally you shouldn't expect a proper gcode when you feed the slicer with a faulty model.
  11. Just for cross-reference reasons here the link to another thread about the same topic:
  12. When I set anything above 366°C for printing temperature, cura marks the input red and refuses to slice. This wasn't the case with older cura versions (e.g. 4.3.0). Is this intended or a bug? For me this is really critical since it prevents me from high-temp printing (or forces me to manually edit the gcode/use PP plugins). I also recently had a talk with a high-temp printer manufacturer that told me they were about to switch from simplify3d to cura and this is one of the reasons why they still hesitate to make it their customers default slicer. I don't know about the other reasons
  13. You're looking for the "support overhang angle" option in the support section. Concerning your 2nd problem: your .stl is not manifold which can cause random failures when slicing. Here's a screenshot of your model highlighting the faulty vertices.
  14. Check out the "combing mode" options in the travel settings.
  15. Hi there, there's some useful feature that I don't use as often as I'd like to. In the "travel" section we can find "avoid supports when travelling"; but I can only use this feature when also "avoid printed parts when travelling" is enabled, which I try not to use most of the time. It's also dependent on combing which I also want to disable in that context. There are models and materials where I try to keep travel moves as short as possible due to oozing/stringing (therefore z-hop is no alternative) but this always comes with an increased risk of knocking ov
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