Alternative coupler

New Home Forum Mostly Printed CNC – MPCNC Advice – MPCNC Alternative coupler

This topic contains 10 replies, has 7 voices, and was last updated by  Dave C. 3 months, 1 week ago.

Viewing 11 posts - 1 through 11 (of 11 total)
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  • #35353

    Dave C.
    Participant

    Okay, so I have decided to upgrade my “gen 1” MPCNC to the new 525 parts as well as the new T8 lead screw. My question is, would a solid 5mm-8mm coupler (such as this one – https://www.amazon.com/Wangdd22-Coupling-Coupler-Alumlnum-Casing/dp/B01M8QXY8N/ref=sr_1_3?ie=UTF8&qid=1496847028&sr=8-3&keywords=5mm+to+8mm+coupler) work better? Being solid wouldn’t it remove any and all flex in the Z-axis?

    #35362

    Ryan
    Keymaster

    They could, the reason I do not like those particular ones is the location of the set screws. They were made with the screws directly across from each other (cheapest way to make them). Ideal is a 90 degree separation. across from each other can cause misalignment and poor grip.

    #35375

    Dave C.
    Participant

    Interesting. Did not realize the position of the set screws could be a problem. I will keep looking then.

    Honestly, would love something like this https://www.amazon.com/Anycubic-Stepper-Integrated-Router-Printer/dp/B019TRKAPO/ref=sr_1_1?ie=UTF8&qid=1496855422&sr=8-1&keywords=stepper+motor+lead+screw . I know the new Prusa MK2’s have had great success with leadscrew integrated into the stepper.

    #35386

    Bradley F
    Participant

    my pineapple coupler split/cracked into two pieces and ended up making my z axis screw up (a lot).

    I printed a new coupler, but would be very interested in a better solution than the printed coupler. (not using the T8 (yet) though).

    #35397

    Barry
    Participant
    my pineapple coupler split/cracked into two pieces and ended up making my z axis screw up (a lot).

    I printed a new coupler, but would be very interested in a better solution than the printed coupler. (not using the T8 (yet) though).

    Print it in petg. It’s a little tougher than pla.

    #35413

    Jeffeb3
    Participant
    my pineapple coupler split/cracked into two pieces and ended up making my z axis screw up (a lot).

    I printed a new coupler, but would be very interested in a better solution than the printed coupler. (not using the T8 (yet) though).

    <span class=”et_quote_sign” deluminate_imagetype=”png”></span>

    Print it in petg. It’s a little tougher than pla.

    Forge it in aluminum, it’s a little tougher than PETG. 🙂

    #35442

    Wouter
    Participant

    I had issues with my pineapple coupler early on. I then ordered an alu coupler online, but instead of waiting I used braided hose, and some clamps as a quick fix. Works a charm! Still haven’t changed over to the alu coupler even though it arrived a long time ago.

    #35445

    Peter A Mills
    Participant
    my pineapple coupler split/cracked into two pieces and ended up making my z axis screw up (a lot).

    I printed a new coupler, but would be very interested in a better solution than the printed coupler. (not using the T8 (yet) though).

    <span class=”et_quote_sign” deluminate_imagetype=”png”></span>

    Print it in petg. It’s a little tougher than pla.

    <span class=”et_quote_sign”></span>

    Forge it in aluminum, it’s a little tougher than PETG. ?

    Don’t mind if I bring this full circle, do you? ??

    https://vicious1-com.myshopify.com/collections/parts/products/5mm-to-8mm-flex-coupler

    #35933

    Dave C.
    Participant

    Okay, so I decided to pick up one of these (https://www.amazon.com/gp/product/B01DVD87Q6/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1) this week. Is there anything different I need to do in the assembly to account for it should I choose to use it?

    #36018

    Ryan
    Keymaster

    I don’t think so, let us know how it works.

    #36079

    Dave C.
    Participant
    I don’t think so, let us know how it works.

    I will.

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