umo mod: z fine tuner v1.2

fine tune your printbed distance

3D printer parts and enhancements

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    Design Notes:

    inspired by
    (thanks to mooncactus!)


    Advantages over the original:

    - No drilling needed!
    - More stable rail profile
    - Compatible with "motor corner"
    - The spring fixes the screw but allows to easily adjust it without too much resistance.


    Print Setup:

    I recommend about 25% infill, 0.8mm wall thickness and  0.15mm layer height.



    Take the screw and nut from the toggle fixing and insert the nut into the slider. Insert the slider into the main part (there are two different sides! place it the way that the marking "B" is facing the wooden back panel). Now place the holdfast in the main part and fix it with 10mm screws from the left and right. Take the M3 toggle fixing screw and glue the little thumbwheel on it. Remove the thread on the upper part where the spring goes (otherwise the spring will maybe scratch on the thread). Place the spring (out of a eletrical lighter or ballpen) on it - optional! you can also use a M3 nut, which you glue to the screw - and insert the screw (through the holes in the main part, the slider and the holdfast). Push the screw downwards until there is enough tension in the spring and fix it with an nylon lock nut at the bottom.

    Place the whole thing on the backside of your ultimaker and tighten it with an 12-16mm screw (or two) from the inside. Place a cardboard between the z-endstop and the back panel in order to get some distance between the endstop and the wood. Tighten the endstop with 25mm screws (just a bit!). Remove the cardboard afterwards. 

    Materials and methods

    - 2x M3 screw 25mm
    - 2x M3 screw 12mm-16mm
    - 2x M3 screw 10mm
    - 1x toggle fixing (TOX SPAGAT TICKI M3 024 700 011). Parts to use: 85mm threaded rod, thumbwheel, nut. Costs around 3€ at our hardware store (Hagebaumarkt). If you want to use another one, tell me the diameter of the nut and I will add a version for you.
    ALTERNATIVE: Fischer KD3K toggle fixing
    - metal glue
    - 1x nylon lock nut

    - ballpen or electrical lighter spring or a normal nut



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    A1dee076298ce2808c2208fb395f52c5?default=blank&size=40Curven added this to the Custom UMO upgrade collection ago
    6f948d46885a59d97968b352b72be99b?default=blank&size=40Puresteel added this to the Ultimaker Original+ mods collection ago
    10de49995fe5c88122d66a34f8be417f?default=blank&size=40TheMaker printed this ago
    Carousel thumb c788b1ed 1a1a 4fdb 92c6 1d046b9e7337
    Printed on:
    Ultimaker - Ultimaker Original
    1st attempt, with minor adjustments, the assembly seems to work. I have not yet tested it on the printer: UMO+
    7f746f3fe4c3f7bdd0d014185e823348?default=blank&size=40Steven added this to the UMO+ upgrades collection ago
    7f746f3fe4c3f7bdd0d014185e823348?default=blank&size=40Steven printed this ago
    Carousel thumb img 20180603 193210 393
    Printed on:
    Ultimaker Original+
    Works as expected.
    4193cd4c5caf0d0308f6049679a334a0?default=blank&size=40ballanux added this to the to make collection ago
    D9f51aefa37dad0230876ff897254e74?default=blank&size=40Phoenix_86 added this to the UMO collection ago
    Eb8d90c9dcbd6bcdab508a13d220e99f?default=blank&size=40Bill Murphy added this to the UM - Todo collection ago
    Cc08ffa669f01f88c5864727d98fa191?default=blank&size=40nilrog added this to the Ultimaker extras collection ago
    2f032cc44e24f394da78ccf2f91e5123?default=blank&size=40dashhunter added this to the My collection collection ago
    291cd18f042f65c496326608a5760345?default=blank&size=40johnfrank added this to the UMO+ upgrades collection ago
    Mini ataraxis glow bigataraxis commented ago

    thanks, i searched for a long time too ;)

    Mini logo neotkoNeotko / Sugarpop! commented ago

    Amazing, and also the cheapest source of m3 80mm I ever seen...

    61d99ab80bfb985103db6063ff6a98a7?default=blank&size=40racerbo added this to the Tings to print collection ago
    Mini ataraxis glow bigataraxis published this design ago