Why a printed coupling?

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This topic contains 2 replies, has 2 voices, and was last updated by  ramajac 1 year, 4 months ago.

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  • #13146

    ramajac
    Participant

    Just asking why to use a printed coupling, instead an aluminium one. The diameters needed are pretty common, at least here in EU. And also I have some replacement couplings with this size from other machines I built before.

    Has the printed one something especial? Is just to save buying another part? So the machine is “more mostly printed” šŸ˜› ?? Or am I missing something important about the coupling??

    Thanks in advice!

    #13153

    Ryan
    Keymaster

    Trick question.

    Any coupler will work fine if you pay attention to its loading. If you use one of the standard 3D printer couplers you are putting a spring into the z axis system and introducing a great amount of backlash/slop. I have designed it so you can minimize this with the 2 piece mount. That being said my printed one is also a good place to be able to make z axis adjustments. It is a coupler and knob all in one.

    The other reason I did it is in the US the 5mmto 8mm standard couplers don’t fit a 5/16 rod very well, and a printed one is cheaper.

    #13179

    ramajac
    Participant

    Thanks for the answer, I suppoused it had an explanation. Im almost finishing all the prints, and this is just a small one, so I will make it for sure. Also having the more parts printed that I can, freaks me out šŸ™‚

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