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chrisr

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Posts posted by chrisr

  1. I made a little utility which plots the fan speed versus layers from a GCode file. With the model in the picture (Bridge.png) Cura "bounces" the fan speed after the bridge completes (a bit like you might see in an underdamped system).

     

    Y axis = fan speed (%)

    X axis = Layer number

     

    Yellow trace = fan speed %

    Blue trace = averaged fan speed

     

    It doesn't appear to affect print quality but probably it shouldn't be there. Or if it should, why?

    (Printer UM2 with Olsson block, WIN 10)

     

    .STL attached

    Bridge.png

    Bridge_1.png

    Bridge_3.png

    Slice_Test_46.gcode

    • Like 1
  2. Thanks Burtoogle. I'm on Win10.  I've looked in appdata/local/...../cura but didn't find anything apart from cache files. To check it wasn't one of those I changed and saved my curaprofile (from within Cura) and none of the cache files timestamps changed.

     

    Hmmm... wonder if it's a registry setting...

  3. Hi all,

     

    Can anyone tell me where CURA 4.xx recalls its startup settings from? I'm looking in particular from where it determines which profile to load on startup.

    I've looked in the usual places - the install Directory and as well in appdata/local/....../Cura but couldn't find anything resembling a .cfg or .ini file & have drawn a blank.

     

    Anyone?

  4. K. I found this:

     

    https://www.makers-hut.com/product/um2-ultimaker-2-aluminum-machined-slider-sliding-block-and-graphite-bushings/

     

    Has anyone any experience of using these carbon lubricated bushings? My gut feeling is:-  I like the concept of them but I'm not sure how well they're fabricated and whether the concept is at all effectve.. ??

     

    Ideally I'd just like a set of the genuine UM2 replacements. Ultimaker used to carry spare parts but I can't find them on the website.

     

    Does Ultimaker no longer carry spares? Can anyone from Ultimaker give me a contact so I can order up the genuine parts?

     

    (Failing that I'll get the parts from the link you kindly supplied Enigma_M4)

  5. Looking to replace the four X/Y phosphor bronze slider bushes. Anyone have a link to these genuine parts?

    I have looked through the website and drew a blank. The spare parts I did find - are only those listed for the most current models.

     

    Ultimaker?

     

    Cheers,

    Chris

  6. Quote

    if it's less than X% then go to 100% for 1/2 second then to that goal speed.

     

    Yep! 🙂

     

    Thanks for your reply and Marlin explanation. I guess that makes it trickier to incorporate into Cura. Hmmm... shame as having that in Cura would be ideal, not just for us UM2 "oldies" but generally as well to benefit other makes of printers possibly? 😉

     

    I did start earlier today looking at "how to write your own plugin" thanks for the hint to the examples and in particular "post proessing plugins" I'll see how I go with it.

     

    In another post about fan speed I found "M106 S255 P0" - from what I understand, this in Gcode means  "Fan 0 100%" so I think I now have my first step of what to look for and what it should be briefly modified to for a "kick" start.

     

    From what you say, I'm guessing the sequence for this "post processor" then needs to be something like  -

     

    1. Read in all the gcode

    2. Search for M106.

    3. Read and store that entire line

    4. Replace that line with "M106 S255 P0"

    5. Count 15 or so lines further on (as per your suggestion)

    6. Insert stored line in there

    7. Write out the amended gcode to a new file.

     

    I think the programming language is "python like" or actually Python. Not something I have a lot of knowledge of.

    So it's going to be a bit up hill. But I'm up for giving it a go!

     

    Downloaded https://github.com/nallath/PostProcessingPlugin

     

     

     

  7. Hi,

     

    I'm printing a lot with low fan speed settings. (15%-20%)

     

    At these speeds the fans won't automatically start without been given a "nudge"

     

    Is there an easy way, say through a plugin(?) to add a 100% kick briefly to the fan to get it started and then once started revert back to 15%?

    If not, could I suggest this be added to Cura as a tick box?

     

    (Cura 4.1 & Ultimaker 2+ with custom fan shroud)

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