Welcome to Our Community

Some features disabled for guests. Register Today.

Lautr3k

Discussion in '3D printers' started by skarab, Jan 7, 2014.

  1. Kyo

    Kyo Veteran
    Staff Member Builder Resident Builder

    Joined:
    Feb 27, 2014
    Messages:
    673
    Likes Received:
    702
    I think I found a suitable screw for my future build of a lautr3k and I wanted some feed back on specs and price.
    Screw Specs-- 6 start 12mm(dia) X 36mm(lead) with nut. Price for Two Machined to Spec $193 How ever they will only machine the ends down to 6mm not 5mm. So I would have to switch to a 606ZZ or 606RS Bearing and adjust the area around the bearing from 14mm to 17mm accordingly.

    [​IMG]
     
  2. gwandad

    gwandad Well-Known
    Builder

    Joined:
    May 12, 2014
    Messages:
    69
    Likes Received:
    55
    G'day Gumpwa Luong, I note with interest your purchase from Robotdigg. Did they machine the ends for you? If so what did they charge for it? I intend using the same davices. Regards, George
     
  3. gwandad

    gwandad Well-Known
    Builder

    Joined:
    May 12, 2014
    Messages:
    69
    Likes Received:
    55
    Where was this from, please?
     
  4. Gumpwa Luong

    Builder

    Joined:
    Oct 20, 2014
    Messages:
    23
    Likes Received:
    9
  5. Sc00ter

    Sc00ter New
    Builder

    Joined:
    Sep 9, 2014
    Messages:
    13
    Likes Received:
    0
    Anyone make an adapter plate to get from "Wade-L3K" extruder to "X-Carriage tool side" ????

    IT'S ALIVE...

    Cheers
    Scott
     
  6. gwandad

    gwandad Well-Known
    Builder

    Joined:
    May 12, 2014
    Messages:
    69
    Likes Received:
    55
    Thanks for the info. After finally reading ALL the forum entries, I am quite confused re what I should do. The Robotdigg choice is by far the cheapest, but I am concerned that being only 8mm, with heavy threading. the maincore is only about 5mm. this would be subject to fairly heavy loads & I worry that it will whip at speed. What does everyone think
     
  7. Kyo

    Kyo Veteran
    Staff Member Builder Resident Builder

    Joined:
    Feb 27, 2014
    Messages:
    673
    Likes Received:
    702
    Misumi ,
    I can grab the part number for you latter tonight if you would like.

    Igus also has 12mm dia x 25mm lead multi start screw. However Misumi was the only one to get back to me with a quote.
     
  8. DiggerJ

    DiggerJ Journeyman
    Builder

    Joined:
    Sep 2, 2014
    Messages:
    412
    Likes Received:
    109
    My guess (as Mine is not together after a decision o rebuild the plastic parts) is that after many days of almost continuous printing and watching the almost continuous changing in directions of the screws and belts is that in the space between the motor (or the bearing on the other end) to the nut on the bottom of the printing plate is not likely to get much chance to whip like a CNC router making long travels. What thinks you guys?
     
  9. Kyo

    Kyo Veteran
    Staff Member Builder Resident Builder

    Joined:
    Feb 27, 2014
    Messages:
    673
    Likes Received:
    702
    I don't know enough about whip characteristics of lead screws to have a solid opinion on the matter. I would agree the short travel distance the nut makes within any one movement before changing direction along its constrained path of linear motion would prevent it from being to crazy.

    In fact the all aluminum 3d printer I designed as my makerfarm replacement will be using 8mm lead screws.
    [​IMG]

    My hunt for suitable 12mm dia screws for the lautr3k is due to the fact it was requested I stay as close to original design as possible. I give most of my projects away to family. I like building more then using sometimes, so I try my best to fulfill their requests..
     
    skarab and DiggerJ like this.
  10. DiggerJ

    DiggerJ Journeyman
    Builder

    Joined:
    Sep 2, 2014
    Messages:
    412
    Likes Received:
    109
    Great looking printer project. A lot going on right, in those plan pics
     
  11. Abstract_void

    Builder

    Joined:
    Jul 29, 2014
    Messages:
    1
    Likes Received:
    0
    Not much concern as far as whipping, but i'm a little iffy about how these screws are mounted. Whipping occurs when you hit the screws critical speed, which is determined by the root diameter of the screw and length between the supports. Depends on your screw, but with the ones from trinity labs in this configuration, you'd have to be running your printer well in excess off 1000mm/s before you had to worry about whipping.

    As far as the mounting though...for a fixed/free system like this, the fixed end is supposed to be 2 bearings spaced 1.5x the shaft diameter and there should be some mechanism (lock nut or shaft collar) to prevent axial movement of the screw. Correct me if i'm wrong, but it seems like this configuration would put a lot of load on the motor and potentially lose repeatability from the screw sliding around (especially with flexible couplings)?
     
  12. DiggerJ

    DiggerJ Journeyman
    Builder

    Joined:
    Sep 2, 2014
    Messages:
    412
    Likes Received:
    109
    The RoboyDigg screws do not use couplers, as the screws are part of the stepper motor (axle and shaft in a single piece), and the far end is 2 bearings and 2 precision shims deep, for a length of 12mm. Because of this you can assemble the unit and "load" the shaft for end play. For those of you who don't want to redesign the print plate, I am posting a shim that we (Area515 MakerSpace) created to allow the 8mm shafts and existing nuts to work with the plates designed for the Trinity labs screws. Seemed better than redesigning several other parts and buying different bearings. Enjoy.

    BTW, the shim is longer than the bearing intentionally, to allow the mounting screws to add an additional way to locate the nut/shim combo. I think it could be shortened to the length of the nut shaft, but have not had time to do I, and it doesn't hurt to have it, so...
     

    Attached Files:

  13. gwandad

    gwandad Well-Known
    Builder

    Joined:
    May 12, 2014
    Messages:
    69
    Likes Received:
    55
    Thanks for the reply. I've come to the realisation that I'm building a 3D printer, not a Space Shuttle! I've decided to go back to my original plan & use the Robotdigg combo.
     
  14. doomstrike

    Builder

    Joined:
    Nov 24, 2014
    Messages:
    2
    Likes Received:
    0
    Hi folks,

    I'm using the following for my Z road (tr8*8 acme lead screw) : http://www.robotdigg.com/product/31/NEMA17-Threaded-Rod,-350mm-length-Tr8*8-Acme-Leadscrew

    and for my X and Y I'm using (tr8*20 acme leadscrew): http://www.robotdigg.com/product/236/Rapid-Threaded-Rod-Stepper-with-450mm-Tr8*20-Lead-Screw

    Anyone have good suggestions what I should use for:

    #define DEFAULT_AXIS_STEPS_PER_UNIT {128,128,200,495} // 495 for Bulldog XL.
    #define DEFAULT_MAX_FEEDRATE {500, 500, 5, 25} // (mm/sec)
    #define DEFAULT_MAX_ACCELERATION {9000,9000,100,10000} // X, Y, Z, E maximum start speed for accelerated

    Thanks
     
  15. Kyo

    Kyo Veteran
    Staff Member Builder Resident Builder

    Joined:
    Feb 27, 2014
    Messages:
    673
    Likes Received:
    702
    No Problem, Good luck with your build :thumbsup:, I look forward to following.

    Thank You, I still need to decide on a finial choice for my hotend/extruder setup (thinking e3d v6 with bowden but not sure how I would mount it yet) then go back though it and tighten up all my measurements. right now everything is a little over sized in case I decided to go dual extruder. Might adapt the robotdig nema screw combos as well. Will cut down on my part list and give a little extra support to the screws. I assume the robotdig tr8x8p2 nema screws are compatible with the OB part store nut block.

    Edit: I should probably post all this in it's own thread instead of cluttering the Lautr3k thread. Sorry OP.
     
  16. Alex272

    Alex272 New
    Builder

    Joined:
    Jan 20, 2015
    Messages:
    7
    Likes Received:
    1
    Hi everyone, I read all the pages and i saw excellent woks!
    I think that the lead screws system is very good, and I want to use it on my new printer but is a problem to find the right screws.
    I'm from Germany and buying goods in USA is a suicide! To much cost! Import taxes, shipping, and long time for delivery.
    I'm looking for a supplier in Germany but I have not found anything yet. I read about the UK supplier, is an option, but it is better if I find something here.
    I have a couple of questions for you:
    Can someone say me the features of the Z axis lead screws from Makers Toolworks? I'd like to find the same in Germany. Can I use the lead screws from Openbuilds for the Z axis?

    I read that Robert Hummel (great job) tried the lead screws from Openbuild but they are to slow... How to slow? Up to 50mm/sec, 60mm/sec, 70mm/sec ???

    Thanks to all!
    Bye
     
  17. Kyo

    Kyo Veteran
    Staff Member Builder Resident Builder

    Joined:
    Feb 27, 2014
    Messages:
    673
    Likes Received:
    702
    Hello and welcome,
    Lead screw specs for Z Axis are 1 Start 10mm X 2mm pitch. If you don't mind doing a little redesign on the printed parts for a new nut bolt pattern you can get all your screws / nuts from Thomson Linear.

    Z-Axis
    1 Start 10mm X 2mm pitch Screw
    part# SRT10X2M
    10mmX2mm pitch Nut
    part# MTS10x2M

    Y and X-Axis
    10 Start 12mm X 25mm lead Screw
    part# SRA10-12X2.5M
    12mmx25mm lead Nut
    part# XCF_10-12X2.5M

    There contact info for Germany:

    Thomson
    Nürtinger Straße 70
    72649 Wolfschlugen
    Germany

    Phone: +49 (0) 7022 504 0
    Fax: +49 (0) 7022 504 405
    E-mail: [email protected]
     
    #347 Kyo, Jan 21, 2015
    Last edited: Jan 23, 2015
  18. Alex272

    Alex272 New
    Builder

    Joined:
    Jan 20, 2015
    Messages:
    7
    Likes Received:
    1
    Hello Kyo, thank you for your reply! Are you from Germany? I'm from Munich.
    The Z axis screws are very simple, will not a problem to find them.
    My new printer is a new project, I'm still designing it. When finished I will share it here.
    The measures of the screws will be a little bit different, but your help is precious, so I can start to ask some informations.
    About the screws... do you know how is the maximum speed reached from the screws of Openbuilds?

    Thanks!
     
  19. Zonyc

    Zonyc New
    Builder

    Joined:
    Jan 26, 2015
    Messages:
    1
    Likes Received:
    0
    Has anyone found a source for the required x and y lead screws besides from robodigg? I already have spare stepper motors and several 3d printers for parts, but I don't have access to a machine shop or machinist to correct the dimensions so another source would be greatly appreciated :). I may have to build something like the cbot if these screws end up being too tough to source.
     
  20. Tiago Torre do Vale

    Builder

    Joined:
    Jan 28, 2015
    Messages:
    1
    Likes Received:
    0
    Hi all, Great work!!!

    I'm sourcing all the components for my build and I have 2 questions.

    Sc00ter did you succeed using the igus leadscrew?

    Can I use 2 20x20 V-slot to replace one 20x40 V-slot

    Thank you

    by the way I'm from Portugal
     
  21. Hellsbellsidaho

    Builder

    Joined:
    Feb 19, 2015
    Messages:
    33
    Likes Received:
    4
    Is Trinity Labs still in business?
     
  22. DiggerJ

    DiggerJ Journeyman
    Builder

    Joined:
    Sep 2, 2014
    Messages:
    412
    Likes Received:
    109
    Nope, they didn't make it.
     
  23. CWidt

    CWidt New
    Builder

    Joined:
    Dec 26, 2014
    Messages:
    12
    Likes Received:
    1
    If they are no longer in business... where do I get my threaded rods, that is what runs the whole machine!

    I really liked the TrinityLabs anti-backlash ones, so I need to find an EXACT or close replacement.
     
  24. DiggerJ

    DiggerJ Journeyman
    Builder

    Joined:
    Sep 2, 2014
    Messages:
    412
    Likes Received:
    109
    If you read the thread, or the TL google group, you will fibd you are in for a bit of a headache fibdibg "exact" replacements. There are OP on here who are naking use if different products, //thehey can give you rgeir successes or failures
     
  25. DiggerJ

    DiggerJ Journeyman
    Builder

    Joined:
    Sep 2, 2014
    Messages:
    412
    Likes Received:
    109
    Actually...no. My new puppy was laying in my lap a few weeks ago, and one of his brothers came through the room with a toy hedwcided he wanted. Ted jumped up and ran across my laptop keyboard and the keys and retainers flew everywhere. seems they aren't puppy toe nail proof! the result is a very frustrating typing situation.

    Oh yeah.....then there is the stroke i had last February. Just a normal day in my life.
     
  26. Gumpwa Luong

    Builder

    Joined:
    Oct 20, 2014
    Messages:
    23
    Likes Received:
    9
    @CWidt

    Take a look at this post: http://www.openbuilds.com/threads/lautr3k.274/page-11#post-10524

    The post right after that is my first test print with those screws. I have 2 other friends using the same ones to build Lautr3ks too :) But they aren't done yet... They even machined the ends for me too, although it was a custom order that took like 20-30 days to ship. But worth it since I dont have the tools to do it myself.

    I'll say again... really great printer! It is much faster and accurate then I expected!
     
  27. Nick Roth

    Nick Roth New
    Builder

    Joined:
    Mar 3, 2015
    Messages:
    17
    Likes Received:
    0
    I'd be interested in purchasing the printed components if anyone is willing, and the lead screw issue stabilizes. I'm in north Alabama.
     
  28. Florian

    Florian New
    Builder

    Joined:
    Oct 19, 2014
    Messages:
    12
    Likes Received:
    1
    Hi Kyo,

    I contacted them last week and no response.
    Did you ever contacted them for a quote?

    Best regards,
    Florian
     
  29. Kyo

    Kyo Veteran
    Staff Member Builder Resident Builder

    Joined:
    Feb 27, 2014
    Messages:
    673
    Likes Received:
    702
    Sorry for the late reply. No, I am from a small town in the PNW part of the USA. I am not sure on the maximum speed of the OB lead screws. I would think it depends on a combo of factors including screw specs, chosen motor, motor steps, driver's used and software setting's. I am working on a project using the OB lead screws so I should know first hand latter this summer.


    The initial email response I got from Thomson took a little bit. But Jessica was friendly / informative and quick to put me in touch / forward my inquiry to John from Applied Industrial. He never did get in touch with me.

    So I did the leg work and found a guy one town over who sells there products. He was quick to respond and could get the screws for me no problem. But they were very pricey ( around $193 per screw machined to our specs + $30-$70 for the nut depending on which was chosen ). I never heard back after I emailed describing the intended use ( this 3d printer ) and asked about volume or group buy discounts. I just can not afford to pony up the some odd $500 for the screws right now to play with them. So I decided to use the Misumi screws ( which are faster, come with nut and cost less then the original TL units).
     
  30. dddman

    dddman Journeyman
    Builder

    Joined:
    Mar 2, 2014
    Messages:
    468
    Likes Received:
    187
    Can I ask why anyone doesn't simply use the OB screws? This is just a 3D printer, there's a lot of other factors that will have to be checked before having to pay for expensive screws... I would be curious to compare a print from this printer to my belt and pulley Prusa i3...
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice