Quentin Harley

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Viewing 15 posts - 676 through 690 (of 710 total)
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  • in reply to: Building a morgan! #671
    Quentin Harley
    Keymaster

    Two stepper pulleys are needed, right?

    At this moment, yes.

    in reply to: Building a morgan! #668
    Quentin Harley
    Keymaster

    If you get a meter, you should have enough for both the drive wheels.

    in reply to: Will these parts work? #666
    Quentin Harley
    Keymaster

    Perfect

    in reply to: Virtual build #661
    Quentin Harley
    Keymaster

    do you have a link?

    in reply to: Morgan Build, Ann Arbor MI (US) #660
    Quentin Harley
    Keymaster

    Really starting to come together!

    in reply to: Morgan Build Morton Grove, IL #659
    Quentin Harley
    Keymaster

    440mm

    in reply to: Will these parts work? #658
    Quentin Harley
    Keymaster

    With an articulated arm system like Morgan, your movement resolution is inportant. The finer the motor movement, the smaller the steps, and the better the print quality. 400 with 32uStep is the cheapest way to improve resolution.

    in reply to: Will these parts work? #648
    Quentin Harley
    Keymaster

    They will work, but I would recommend getting two of the DRV8825 high current stepper drivers, in order to get the 32th uStepping on at least the motors for the arms. You can use the 1.8 deg motors on Z and extruder with no problem, and i have them on the first Morgan… They do work.

    I prefer the 0.9 deg motors for the arm though.

    in reply to: Printed parts needed – Cape Town, ZA #647
    Quentin Harley
    Keymaster

    I have asked Peter to add two more packages to the OpenHardware.co.za offers. One will be Printed only, and another Vitamins only.

    in reply to: Virtual build #640
    Quentin Harley
    Keymaster

    Thanks. I think it will be great for you to visualise everything before you start.

    in reply to: Threaded hardware #639
    Quentin Harley
    Keymaster

    It does not matter. The thread in the rod will be used in it primary design purpose, and that is to fasten stuff together. I use the course thread on mine.

    in reply to: Building a morgan! #626
    Quentin Harley
    Keymaster

    It is a omission. This has been fixed in the working document, but I will have to update the PDF.

    I use T2.5, and the smallest pulley I could get, but GT2 would work fine as well. The actual size is not critical, but get the smallest you can get to optimise the drive ratio.
    Everything gets set up in initial calibration.

    in reply to: Building a morgan! #623
    Quentin Harley
    Keymaster

    Main reasons are Cost and availability. When I build my first machines nobody thought about using 400 because 200 is good enough. People are now bringing in 400 in limited quantities, but if you get it at the same price, it should be fine, especially for the Z-axis that is quite quick at the moment after the drill bit lead screw update.

    in reply to: Printed parts needed – Cape Town, ZA #614
    Quentin Harley
    Keymaster

    Have you sourced the other components already?

    The kit is actually very well priced. I could not buy al the components for the same price – bulk buys actually work…

    Printed plastics alone should be about R500 plus shipping.

    in reply to: Morgan Build, Ann Arbor MI (US) #609
    Quentin Harley
    Keymaster

    On Morgan master it should be 175mm between the rods. Di you go for 8mm or 12mm rods? 12mm is 195mm between the rods.

    Morgan lite is 160mm.

Viewing 15 posts - 676 through 690 (of 710 total)