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elnadav12

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Posts posted by elnadav12

    Rough surface finish (horizontal layer lines) on UM2+

    in Improve your 3D prints

    Posted

    17 hours ago, gr5 said:

    Did you order one from UM, a reseller, or did you buy it directly from some store?

    I purchased from FBRC8. They should be an official reseller…

    90CC4017-0C9F-4F82-B393-A5D342E2156B.thumb.jpeg.c33d9ff0ce99f90dbdafc258b265d3d8.jpeg

    17 hours ago, gr5 said:

    After you replaced, how much grease did you put on the z screw?

    I used a tube of magnalube grease that was included in the extrusion upgrade kit, more than a pea for sure. 

    17 hours ago, gr5 said:

    I'd add triple the weight amount

    That was 1kg in the video. I shared a print with 2kg above… I’ll try again with 3 or 4 to see if that makes a difference.

    On 12/3/2022 at 12:55 PM, elnadav12 said:

    Left with 2kg weight.

    image.thumb.jpeg.ca7a305580ec9eefb28bc7d0bbb01dec.jpeg

     

    Rough surface finish (horizontal layer lines) on UM2+

    in Improve your 3D prints

    Posted · Edited by elnadav12

    3 hours ago, gr5 said:

    I'm only talking about the horizontal lines but we can talk about the other issues if you want.

    Regarding ringing, I mostly print using the default Cura profile. These acceleration (3000) and jerk (20) parameters seem reasonable... I know that the Ultimaker gantry is light and stiff. Should I see these ringing artifacts at 50mm/s?

    3 hours ago, gr5 said:

    So do the lines continue all the way around the cube?

    Some are all around, some are not

    image.thumb.jpeg.644e0cb4e026404fe86f20fad0deaacd.jpegimage.thumb.jpeg.c6cf01409d93d7f56e36da3d67f7ce65.jpegimage.thumb.jpeg.ff615bdcc368d2422ee0839bcd4cc1c6.jpegimage.thumb.jpeg.0ba1f16200c441b300b915f5ea2e1344.jpeg

     

    3 hours ago, gr5 said:

    If so then it's most likely a Z screw issue

    I thought so as well, for that reason I replaced all of the Z axis parts...

    I hear crackle noises when the bed lowers and the motion isn't smooth. 

    These are all new parts :\

     

    3 hours ago, gr5 said:

    Did it get worse or better when you replaced the Z parts?

    I've had these lines before and still have them now

     

    3 hours ago, gr5 said:

    temperature fluctuations

    Temps stay within 1C according to the display. You can see that in the video linked above. Seems like the heated bed effects the temp sensor readings but all of these prints were done with the heated bed off.

     

    3 hours ago, gr5 said:

    feeder

    In the cube above I think I can see some slight signs of under extrusion but at 50mm/s and 210C the 2+ feeder should handle that easily. That also doesn't explain the lines that are all around... Perhaps a combination of extrusion issues and faulty lead screw?

     

    BTW thanks for helping!

    Rough surface finish (horizontal layer lines) on UM2+

    in Improve your 3D prints

    Posted · Edited by elnadav12
    spelling

    6 hours ago, gr5 said:

    Or you can replace some of the Z parts - particularly the Z nut followed by z bearings and the 2 z rods and finally the z screw.

    I already replaced the two Z rods, bearings, lead screw and nut. They should be good...

    I tried your brick Idea and added a 2kg weight to the back of the bed. Made no noticeable difference.

    Do you rule out extrusion or other mechanichal issues?

     

    image.thumb.jpeg.9c98171be431c31660d6b0cb7d786f7f.jpeg

    Left with 2kg weight.

    image.thumb.jpeg.ca7a305580ec9eefb28bc7d0bbb01dec.jpegimage.thumb.jpeg.92079cb08f8279a652208e566ec108a1.jpeg

    Rough surface finish (horizontal layer lines) on UM2+

    in Improve your 3D prints

    Posted · Edited by elnadav12
    misspell

    Hey guys,

    I have an UM2 with the plus upgrade kit. My prints come out with inconsistent layers - I see uneven lines.

    I tried a lot of troubleshooting so far... I think it's an extrusion issue but I can't find any mechanical problem.

     

    I replaced most of the old parts in the motion system with new original parts:

    -X,Y shafts, bearings and belts (I still use the old pulleys. They're screwed in tight, but some of them seem a little oval. Could that be it? I don't think so because lines come out straight and I do see some groups of layers that are perfect...)

    -Z shafts, linear bearings, stepper motor, lead screw and nut

    -Bowden tube, PTFE coupler, heater block, nozzle, all 3 fans

     

    It visually seems like each couple of layers stick in or out.

    I tested multiple rolls of Colorfabb PLA/PHA and a brand new roll of Ultimaker white PLA.

    Could the feeder be worn? I took it apart and it seems fine...

     

    While reading in the forum, I saw a thread discussing temperature fluctuations that result from the heated bed turning on and off which alter the reading of the temp sensor.

    I tried printing with the bed off and saw a big improvement but some lines still remain...

     

    How do I solve the heated bed issue? Is it a problem with my old (2015) UM2 logic board that was fixed in newer versions?

    Why do I still see lines when the bed is turned off? Nozzle pressure? Old feeder? Motion system issue? Sticky Z axis?

     

    @gr5 have you experienced this before?

    I added some test prints below for you to see for yourself.

    Thanks for helping!

    Video from printer: 

     

     

    Both printed at default 210C, Ultimaker white PLA, "fine 0.1" Cura present (only changed layer height to 0.15), left printed with the heated bed on and right with it off.

    IMG_8742.thumb.jpg.1b786bbfdc1aec153693b5c48a22756c.jpg

    All 3 printed with bed off. The middle one was printed at 200C and 92% flow , the right one at 210C 95% flow, and left one was sliced at 80mm/s (all others 50) and printed at 210C 100% flow.

    IMG_8743.thumb.jpg.9f206c10f1ec21210e4d034f2b14ea15.jpg

    This one printed at 0.15 "normal" present, silver colorfabb pla/pha

    IMG_8746.thumb.jpg.516cb4c2c55872bf51f42794e3e2abba.jpgIMG_8745.thumb.jpg.8833754aa4d7426e53b09e4efa107c2e.jpg

     

    Another print with 0.15 normal present

    IMG_8747.thumb.jpg.f34818c180673da9e1482b52041ef5ad.jpg

    Inconsistent layers on UM2+

    in Improve your 3D prints

    Posted

    On 4/29/2022 at 10:15 PM, Torgeir said:

    Hi @elnadav12,

     

    Been away for some times..

     

    Just wonder if your nozzle is just too big or maybe to much worn?

    As you've changed parts in order to any remove mechanical play(?). This lines might move slightly in and out due to worn out -or too big nozzle size. Have a look at this -I'll assuming you're using a standard size 0.4 mm. 

    However, your nozzle tip looks "some" worn to me (see last picture).

     

    Good luck.

     

    Thanks

    Torgeir

     

     

    Hi, thanks for the response. It's a brand new 0.4 nozzle.

    I think I resolved the issue, I noticed the feeder is "ticking" at low speeds, probably not getting enough current.

    Although, when loading filament I tried to pull it as hard as I could and it kept feeding.

    I looked online and found a new official "beta" firmware for the UM2+ that was released quietly in 2018.

    I installed it and prints seem perfect now. Also fixed the ticking noises.

    https://github.com/Ultimaker/UM2.1-Firmware/tree/UM2.1_JarJar/releases/beta

    If you read this and have the same issue, just download the HEX file and upload it to the printer in cura 🙂

    • Like 1

    Inconsistent layers on UM2+

    in Improve your 3D prints

    Posted

    Hello, I have an UM2 with the upgrade kit installed. For some time now I can't get a smooth print. I performed some maintenance recently to try and solve this and some other issues.

    All X,Y,Z shafts, bearings and belts were replaced. The heater block and PTFE coupler were replaced as well.

    Yet, prints keep having inconsistent layers, my best description would be that layers are "sticking out". Is it over extrusion?

    I have eliminated inconsistent filament diameter, as I tested multiple rolls of Colorfabb PLA/PHA and a brand new roll of Ultimaker white PLA.

    During maintenance I also cleaned the lead screw and nut and applied new grease.

    What could cause such issue? I'm really frustrated...
    IMG_4730.thumb.jpeg.bc15004150f0df0357041fcfbea1c669.jpegIMG_4727.thumb.jpeg.679b89dfa903f57a64ddc495b0efbaa6.jpeg

    IMG_4783.jpeg

    ultimaker 2+ stuck on v3.3.0

    in Firmware

    Posted

    Hi,

    I got an ultimaker 2+ (um2 with upgrade kit) that is stuck for a couple of months on cura version 3.3.0

    I tried to update it last month in cura version 3.4.0 but no success. same with 3.5.0/3.5.1

    Is there any way i can fully flash the memory of the arduino board? idk what to do...

     

    Ultimaker 3 upgrade kit

    in UltiMaker 3D printers

    Posted · Edited by elnadav12
    grammer

    ultiarjan said:

    Bit funny how people look at printers so different as to other products :)

    I don't really understand why people think a products price is made up only by it's parts? Have you any idea what the components price of a high-end phone is compared to it's retail price? Do you write letters to Apple/Samsung why you can't get there products for the components price? Don't think so ......

     

    300$ profit is over 40% of the components prices!....

    Ultimaker 3 upgrade kit

    in UltiMaker 3D printers

    Posted · Edited by elnadav12
    grammer

    meduza said:

    It they did a upgrade kit from UM2 to UM3 it would most certainly not be 500$-1000$... (the UM2+ upgrade kit is 500$, and this upgrade would be substantially more), it would be more along the lines of 2500$ i would guess since so many parts have changed, and it would be a very time consuming install.

    I would suggest that you sell your UM2 and get a UM3 instead if you want good dual extrusion.

    elnadav12 said:
    really wanna upgrade my printer, and i think that most of the people, will agree to pay around 500-1000$ for a upgrade kit

     

    To upgrade the 2 to 3 you need an additional stepper (20$-50$), perhaps a different controller (333$) the new head - maybe 120$ and the plastic part that changes the height of the extruder

    I have no need for the smart spool holder... with some profit it should be less than 1000$!

    Ultimaker 3 upgrade kit

    in UltiMaker 3D printers

    Posted · Edited by elnadav12
    grammer

    Hi. I decided to buy an Ultimaker 2 about a year ago because of the quality, upgradability, open source, great look and many recommendations. I have many problems like under extrusion, material grinding and more....

    Half year later, Ultimaker released the UM2+ that solved all these problems...

    Many others including me purchased the 2 because Ultimaker promised dual extrusion! I really want to upgrade my printer, and I think that most people will agree to pay around 500-1000$ for an upgrade kit which will solve all of the 2's problems (including the annoying always on fan) and will add dual extrusion, instead of selling the UM2 and buying the um3 which will cost more.

    The whole Ultimaker community has been waiting for that since the UM2 announcement and you promised!

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