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ftoons

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Posts posted by ftoons

  1. Hello,

    I was excited when Cura 4.13 announced new default speedy 0.3mm profiles for all Ultimaker printers.

    Unfortunately, I couldn’t find that new profile for my ultimaker 3 Extended.

    Still not with Cura 5.0, no new 0.3mm speedy profile. Only my old ones.

    Any guidance?

    I really hope UM three support is still hanging in there. It has only been a few years since they were released.

     

    (Edit: Nozzle is standard AA0.4)

    • Like 1
  2. Ok, so I updated from 4.11.0 to 4.12.1 (latest on webiste). 

    Still I got an update notification on Cura and when I click "update" nothing happens.

    I deleted the plug-in and restarted cura, got a notification to sync settings, and got the new version of the plug-in installed.

    That problem is solved but I do not see the plug-in.

    In fact, I do not see a lot of the plug-ins in the screenshot you showed. I can only see 22 Cura plug in in the market place!?

     

    Any thoughts on how to see all the plug-in?

     

    Thank you.

    Capture.JPG

  3. I am an essentials user indeed. 
    but I have always been an essentials user. The plug-in was present before. Now it shows a sign that it requires an update inside cure, but doesn’t update when I click the update button. 
    And when I search for it in the market place I don’t find it. 
    Now I’m afraid if I delete it I won’t be able to find it again..


    Edit: just checked, I’m missing an update on my Cura version. Will update Cura and hopefully it’ll show again.

  4. I think I found the culprit. 

    Its the "Smooth spiralized contour" button that is causing the spiralized part to shrink a little. So the lower layers are actually not protruding out, rather the whole upper spiralized part that is going a bit inwards.

     

    I hope this would be fixed at some point in the future, so that the whole vase prints smoothly without any bulges.

    • Like 1
  5. image.thumb.jpg.2efdb82938e6143cb26546f8094eb5c6.jpg
     

     

    image.thumb.jpg.e6ea672a17c8495e014f15998cb4a133.jpgIts Sept 2021 and the problem is still present. 

    id like to clarify that the large layer/s are actually the bottom layers, not the first spiral layer. 
    I’m printing vases and if I have 3 bottom layers I see the 4th one (the first spiral layer) smaller in diameter from the outside of the model. Layers are all smooth from the inside.

    it is as if the line width of the spiral layers is smaller, or as if the inner wall of the bottom layers is pushing those bottom layers slightly out. 
    tried decreasing line width and flow rate of the inner wall, didn’t help.

    the second and third layers are not “first layer” anymore so can’t control them with that.. 

    only if there was a way to remove the inner wall, or to decrease the line width of the bottom layers!!

  6. On 2/26/2021 at 7:19 AM, gr5 said:

    Cura has some "new" (a year or two old now) profiles..

    Thanks for posting the settings.

    I have an UM3 Ext. I was hoping you can kindly post the settings of the other S5 profiles so I can use them on my printer?

    Thanks again.

  7. 15 minutes ago, ftoons said:

    Thanks..

    Not sure why but this setting is not visible despite toggling the check in settings visibility..
    Any idea?

     

    Found the reason. It disappears when concentric pattern layer is selected but appears when lines pattern is chosen. Setting visibility dtrangely doesn't show the exclamation mark that notifies when a setting isn't visible for a reason on this one.

  8. 1 minute ago, ftoons said:

    Hello,

    Just wanted to add that the settings posted by Smithy in post linked below are great for improving tolerance.

    Here it is:

     

     

     

    they are a bit slow though, and there are a lot of retractions causing stringing in prints, and perhaps this can be tweeked.

     

    I'll check out the engeneering settings posted by gr5 and hope they are better.

     

    Thanks.

     

  9. There are many kind of blops and sources for it IMO

    - Temperature too low, increases the pressure of the filament on the hotend, so when a stationary movement occurs, the filament slips out making a blob. Because on it's  semiliquid state it tries to find places to go. The fix for this is to print even cooler, or print slower. Printing too low will allow the filament to not be able to drip, since will be less viscous. Printing slower will decrease the pressure on the hotend making less pressure that can 'slip out'.

    - If you have too much pressure, a fix is to wipenozzle while retracting, so the pressure blob it's part of the print, instead of a stationary blob. This I think is possible on Cura 2.6 (don't I don't use it so). On S3D is quite easy to activate and control.

    - If there's a stationary retraction, something that UM2 with ultigcode does quite a lot because it uses a separate gcode to retract-recover (so it can't do retraction+move unless you use reprap flavor), you need to change the settings to allow combing for example so the end of a loop the motor isn't extruding and the blop becomes part of the end of a loop (pressure becomes part of the print instead of a blop).

    All this adjustments are filament-brand based, and sometimes change from color to color (even same brands have different viscosity). So you will have to adjust accordingly.

    The easy fix, the no brainer fix, is to print cooler + slower. There's always a 'neat' spot where both work great. @ultiarjan has a nice test for that, I never used it since I do it by eye, but I think is one of the best tests out there. Is at:

    https://www.youmagine.com/designs/quick-temperature-fillament-test

    Oh wow even Ultimaker made a video out of it:

    Thanks for your informative reply.

    I'm leaning more for it being a z seam. as the blobs become align on top of each other when I click the Z seam alignment to shortest. not sure why it shows sometimes and sometimes don't..

    they are there when printing at low speed and low temperature. I dont think its that in my case..

  10. Ah!  That's almost certainly it then.  It's trying to print a 1mm line width out of a .4mm nozzle.  Spiralize is weird that way.  I would put a larger nozzle on there.  You can get a .8mm core from ultimaker or you can get a 3rd party version from shop3d.ca that lets you change nozzles.

    The problem on benchy is similar: overextrusion or not viscous enough (too hot).  The pressure builds up and sometimes it just squirts out and makes a blob.  There are many causes - not just spiralize.  It could be that you are just printing too fast and pressure builds up too much.  Or maybe too hot - cooler filament is less likely to spurt out the side of the crack along the nozzle.  Or at least it only spurts out a tiny bit.  I've never used innofil but 215C sounds too hot for the UM3 if it's PLA.  The UM3 nozzle temp should typically be 10C cooler than that of UM2 or other printers.

    Ok, I think we are getting closer to the answer here..

    I just printed this test cube with the following settings:

    Image-1.thumb.jpg.81d1e9fbe569c6f617599d5439843ba1.jpg

    Generic PLA @185, 35 mm/s

    Z Seam Alignment (shortest) This is new this time and i think its the key here..

    LAyer height 0.2 mm, wall thickness this time 0.4mm

    Decreased travel speed, print acceleration and print jerk (not sure if they affect anything in vase mode?)

    Enabled retraction and retract at layer change. Ret distance = 6.5 mm, ret speed 25 mm/s, retr min travel 0.7 mm

    Also minimum layer time was 0.

    It seems to me that the Z Seam Alignment is causing the blobs to concentrate on top of each other for a couple of layers, then in the next couple of layers they move to another corner (the other corners get clean, only one has blobs) then the location of the lumps of blobs change to a different corner and so on..

    I'll try to specify a location for the z seam alignment and update you.

    Thanks.

  11. Well it's interesting that it only happens on the corners.  I think maybe it is overextruding and only on the corners does the filament leak out.  

    Ah!!  I have a new theory I like.  This is spiralize?

    Spiralize is weird.  In non-spiralize mode if nozzle is .4mm and shell is .8mm it will make two passes.  But in spiralize mode it will try to do it in one pass.  So it will doubly extrude to get the .8mm shell and that's a LOT of pressure.

    That would make sense as to why it sometimes is just too much pressure and it occasionally leaks out suddenly and makes a bump.

    1) What printer is this?

    2) What filament size does your printer use (1.75 or 2.85)?

    3) What is your nozzle size set to in cura and does that match your machine?

    4) What is the shell width in cura?

    1 & 2 )Ultimaker 3 Extended, default 2.85 mm

    3) nozzle size set to 0.4 (in print core setting), line width 0.35 (default profile)

    4) I believe that's the wall thickness under "Shell"? Its 1 mm.

    One other thing, it seems this problem is appearing in other non vase mode prints as well. Here's a dual extrusion benchy i did yesterday in 0.2mm layer height, innofill pro (black) @ 215 C and generic PLA (golden) @ 205 C. I have decreased printing speed to 45 mm/s. Enabled prime tower and ooze shield took a little more than 5 hours. Not the best benchy.. but for the sake of this thread, it also has two of those blebs in a corner (front hull): Image-1.thumb.jpg.f3af8fe96f027dbd047b32f7029f9b92.jpg

    I'll print the cube in non vase mode and see if it makes a difference.

    Thanks for your kind assistance.

  12. Generally the z axis only moves when it changes layers. It will go down to the specified layer height then start the next layer.

    But when in vase mode the z actually constantly moves downward so you end up with more of spiralling layers. This gives the clicking sound as the z is making tiny movements downward.

     

    But the clicking i'm hearing is about once every second (printing at 30mm/s to test gr5's suggestion). Wouldn't a constant move give a much higher frequency (multiple per second) clicks?

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