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conz

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Posts posted by conz

  1. Latest Lisa/S and Paparazzi presentations from the IMAV 2014 in Delft.

    Bart Remes about the Lisa/S (Start at 1m:15s):

    Gautier Hattenberger about Paparazzi (Start at 1m):

    OT: Would it be possible to enable the time parameter in YouTube? (the "&t=1m15s"). Tried it with different videos, but didn't work embedded in the forum. :(

     

  2. Smaller ones are also cheaper, making it easier to join the project.

    I would love to print&build a small quad-copter. But I do not have loads of cash laying around. So I think making a "ballpark" BOM would be important to start with.

     

    The small "autonomous" machines are not that cheap. Way more than the toys in this size. But the "autonomous" functions are the next, interesting steps in this field.

    The basis version of the Lisa/S without a frame and without motors is $410. I would use some old motors of one of my Hubsan. The version with motors and frame is at $500. :(

    EDIT: And I have already a Spectrum DX6i Controller. So I'm a little bit biased. But I have no connections to 1bitsquared.

     

  3. The big quadrocopter are cool. But I like the smaller ones more. The small ones are more flexible with the flight area and are more mobile to carry around.

    I really like the Lisa flight controller and the paparazzi auto pilot (open source).

    The new "Lisa/S" by http://1bitsquared.com/ has Accelerometer, Gyroscope, Magnetometer, GPS, Barometer and can sent the telemetry data back to the ground station.LisaS_Top_Functions_Labeled_1024x1024.jpg

    A small frame for a quadrocopter is faster to print, too. ;)

    More info about the Lisa/S in this interview (starting at 1m50s):

     

     

  4. I have used the friction welding only with printed parts in PLA and welded them with the same filament. The idea is to melt both parts and the filament at the same time to get a really good bonding.

    It's a thin line between drilling/milling and welding with the filament. It will need some pratice.

    A dremel with speed adjustment is recommended.

     

  5. Magnalube-G wurde in meiner Lehrfirma (heute Besi Switzerland) für Spindeln und ähnliches verwendet. Keine Ahnung wo die das her hatten.

    Man kriegt's auf Amazon, keine Ahnung ob die auch nach Deutschland liefern...

     

    Auf Nachfrage bei Ultimaker wurde mir so eine kleine Tube mittlerweile zugeschickt.

     

  6. I have printed your new file with success. And not that much bending. I have had more problems with bending before with other objects and other materials. Maybe this material didn't tend so much to bend the edges.

    You can see all the flaws really strong with this material. Especially in macro shots (In reality the object looks much better).

    ColorFabb "Shining Silver"

    Temp:215°C

    Infill: 100%

    Speed: 100% (based on your values on YouMagine)

    My main problem is the stringing.

    small pillars03

    small pillars04

    small pillars05

     

  7. I'm one of the users with problems to play QuickTime in the forum.

    - Win7/64

    - Tested with Firefox and IE

    - QuickTime V 7.7.5 is installed

    I get the QT-Logo and after some seconds a big qustionmark over it.

    Quicktime is the worst container for videos nowadays.

    I would prefer AVI or WebM over QT.

     

  8. Your observation is correct.

    The leveling is the most important factor of this issue.

    For very good results the best solution is to add a bevel/chamfer to all your bottom edges. (the bottom face).

    A chamfer with the size of the "initial layer" OR "initial layer" + "layer hight" seems a good value.

     

  9. Printing it right now. UM2

    Maybe I have found good settings for my printer and material. But with your test object I have nearly no issue with raised edges.

    IMHO with circles as a profile for the pillars, the edges are not raising that much. Maybe a quadratic profile for the pillars will lead to more intense raising. Or a more extreme angle of the pillars.

    I have used the settings you mentioned on YouMagine.

    PLA ColorFabb "Shining Silver"

    Temp: 217°C

    [EDIT: Robert's feeder]

    [EDIT2: I'm using 0% infill, maybe that reduces the issue, too.]

    I'm not happy with the surface. Will test a print with lower temp later.

    small pillars01

    small pillars02

     

  10. UM2

    Levelling the bed.

    There seems no feedback/reference for the z-stepper. Kept getting differing initial thickness at each print (from head on plate with little or no extrusion to thickness that just does not stick.

    so new method is to level as normal but then when printing begins with brim or skirt adjust the 3 screws to get even thin (just about transparent thickness) need plenty of lines in the skirt to ensure level but seems to work

     

    This is fixed in the latest firmware. ( I prefer the firmware with some fixes by illuminarty: http://umforum.ultimaker.com/index.php?/topic/5935-z-axis-homing-inconsistent-on-um2-workaround-and-patch/page-6#entry57095 )

    I have had the same problem, but since the fix I get a really good reproducable start. After leveling I measure the skirt and fine tune the leveling as you describe. The leveling is stable for many prints now. I'm very happy with the new firmware.

     

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