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antiklesys

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    Heavily upgraded UMO+accessories for sale

    in Buying or selling your UltiMaker

    Posted

    4 hours ago, danjn said:

    Hi, 
    I read your upgrades but this is the first time I've looked into buying a 3D printer, looks impressive (without know what it changes 🙂) 

    I'm looking for a UMO for the reason of cost and cos I like to work things out and tamper to.

    Is this still available?
    If so ho much?

    Ta 

    Hi Danjin,

     

    Yes, it's still available. I've received a couple of offers but no payment yet. The first one to pay is the first one to get it. 😉

    I'm happy to hear you're the kind of person who likes tinkering with things, so I am as you can see haha 😛

     

    If you like I'm more than happy to discuss with you about the changes I've made to the machines, the reasons and the accessories it will be shipped with and we can discuss about the price too in detail to see if we have an agreement or not.

    Feel free to PM me with your phone number and I can call you if you're interested.

    Also depending where you're from I can check whether I can include the shipping in the final price or if this will need to be paid separately 🙂 Looking forward hearing from you (sent this message also as a PM)!

     

    Heavily upgraded UMO+accessories for sale

    in Buying or selling your UltiMaker

    Posted · Edited by antiklesys

    Hi Everyone,

    I've decided to put up for sale my UMO. It comes as a bundle and there's load of stuff in this package.
    The printer will be shipped assembled and is in working conditions.

     

    It's a heavily modified machine and you can see pictures and details of all the modifications it received in the thread: http://3dprintingforum.us/viewtopic.php?f=7&t=54&start=30

     

    Despite being an Classic UMO it has been upgraded to have a Heated Bed with a PEI surface and it was converted for 1,75mm filament.


    It comes with ALL modifications described in the thread linked above, but it comes also with ALL the original parts.
    So, at any given time you can revert it to the classic setup.


    I will include also around 4 spools (used, but with a lot of filament still) of Colorfabb filament (2,85mm filament).

     

    The printer will also come with the following accessories:

    1x E3DV6 1,75mm hot end
    1x E3DV6 3mm hot end
    1x E3D Titan extruder with 3mm and 1,75mm filament adapters
    1x laser engraving head
    24v PSU (as the printer was converted for 24 v operation).
    These items are already worth 200+€ alone

     

    The printer will NOT come with: 
    Olsson's Ruby Nozzle
    1,75mm filament
    Geo Hangen Extruder

     

    I'm open to sensible offers and available to provide specific pics, details or information upon request.
    Shipping is to be paid by the buyer, printer is located in central Italy.

     

    I'm happy to be paid in the following forms:
    Bank Transfer
    PayPal (fees on buyer's side)
    Cash (in person only)
    Magic The Gathering cards (in person only)

    Support infill suggestions?

    in UltiMaker Cura

    Posted

    Hi Le Paul,

    I know this may not be what you're asking for, but when I was printing the death trooper helm I had some pieces in which the support was being difficult. I resolved by creating a STL with meshmixer with the support from there and then printing it with Cura with the added support.

    Yes, it's a lot of support indeed in the end, but as you said: sometimes you just need it when the printing time is very long.

    Idea. New location for Z limit on UMO+

    in Third party products & modifications

    Posted · Edited by Guest

    I get that, just saying that if you home on top like I do, then there is a crash risk.

    As you say, no real danger when you home at the bottom.

    Hi Amedee,

    No. There should be no crash risk even at the top.

    If you read my repro steps at step 1 i do home at the bottom, but then at step 5 i disable the mod and home again at the top.

    Are you instead talking about a crash risk if you ALWAYS home at the top?

    In that case there may be a "more touching of the head on the bed" but then the risk should still be mitigated by the top endstop.

    Idea. New location for Z limit on UMO+

    in Third party products & modifications

    Posted

    Thank you for this feedback.

    Now the homing offset is not something we made up, it is part of standard Marlin. I think we just need to document it.

    You can easily revert to the default behaviour by either resetting the firmware as you mention, or just clear the value with 'M206 Z0' (and 'M500' to save it).

    But it is worth mentioning it as the particular case of end-stop at the top the offset raises the bed, so it will crash in the head!

    No, in my case it will not crash in the head, but it will lower the bed and print mid-air.

    I don't think there's a crash risk, just a missprint risk.

    Idea. New location for Z limit on UMO+

    in Third party products & modifications

    Posted

    Hi Amedee,

    There's another bug with this code, not sure if "reset firmware to failsafe" helps to fix it or not, as I haven't yet tested that part out.

    The way the issue works is as per the below repro steps:

    1- Enable Neotko's mod and have the UMO home at the bottom

    2- Flash the firmware with the mod

    3- Adjust the Z offset to the value it should be. In my case this is 19.7

    4- Print - everything works fine

    5- Flash another firmware disabling Neotko's mod and have the UMO home at the top

    6- Print - the printer will home and then it will move the bed down by 19.7 when printing, so the print will basically have layer 0 at 19.7+layer height

    I'm not sure that resetting to failsafe might help after point 5, as the Z offset wasn't defined to 0 as failsafe setting anywhere (I may be wrong on this).

    The poor man's workaround would be to change this line of code (in your firmware as well as in mine), from :

     

    #ifdef SOFT_Z_ALIGN   MENU_ITEM(submenu, MSG_ZA_ADJUST, lcd_z_align_menu);#endif // SOFT_Z_ALIGN

     

    to:

     

       MENU_ITEM(submenu, MSG_ZA_ADJUST, lcd_z_align_menu);

     

    basically removing the requirement for SOFT_Z_ALIGN to be defined in order to tweak the offset. I know this is not an elegant solution tho :D

    Idea. New location for Z limit on UMO+

    in Third party products & modifications

    Posted

    Hi Amedee,

    The later fix is not needed as per se, but I included it for two reasons:

    1- It doesn't hurt :)

    2- It fixes other issues that may arise going forward when/if we decide to port more features from Marlin RC to our version of Marlin.

    Also note that in the second fix they renamed "scale" to "_scale", as it refers to a more advanced version of the firmware, so you have to implement it by changing it back to "scale".

    So in the end it's not a fix, it's prevention :D

    Weird Z height issue with UMO Marlin

    in UltiMaker Cura

    Posted

    Tested by changing the line into:

     

    #ifdef ENABLE_AUTO_BED_LEVELING   MENU_ITEM_EDIT(float32, MSG_ZPROBE_ZOFFSET, &zprobe_zoffset, -10, 10);#endif

     

    The first issue I encounter is graphical.

    While the value stays within positive numbers, the display shows it correctly during the adjustment (for instance it shows : "Z Offset: 000.02")

    As soon as I go below 0 with the encoder, it shows on the display "Z Offset: --*.,("

    Thus not allowing me to correctly set a negative value.

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