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  1. #1

    DIY 3d Printer Frame from steel


    I currently have a hictop prusa i3 clone and I am considering making my own larger printer with a steel frame with fully supported linear rails, nema 24 stepper motors and drivers from a left over project.

    I have a mig and tig welder, a Bridgeport milling machine and a CNC milling machine that I made from scratch so fabrication isn't a problem.

    So basically what i am asking is of anyone has done similar and some pros and cons of my ideas

    I was thinking of making something similar to a ender 5 box frame but with welded steel and powder coated so it would be as solid and heavy as ever needed.

    I would try and make the moving carriage part at the top with the hot end etc as light as possible (possibly machined aluminium parts) to help acceleration and deceleration as much as possible with the same dual belts to move the y axis.

    Would nema 24 be to large? Will the motor inertia be a problem?

    By increasing ridigity would it increase printing speeds or does it not work that way?


  2. #2
    Super Moderator curious aardvark's Avatar
    Join Date
    Jul 2014
    increased rigidity and weight - will help increase print speed.
    Nema 24 for moving things around should be fine.
    wouldn't use it for the extruder though, unless you're planning on a bowden setup (why would you ????).
    Although for actual print speed the classic I3 design is a lot faster than standard cartesian box setup. That's pretty much the slowest setup.

    I've got a rep pro clone, i3 clone and a delta. Speed wise the delta is the fastest, the i3 is pretty close behind and the rep clone runs at about half the speed of the others - flat out.

    Get it right with a delta and they'll blow everything else away for speed and qualiy.
    A good I3 (NOT ender range) will also print at speed with excellent quality.

    Good i3; dua bed side rails, direct drive extruder and dual z screw - basically as Josef prusa designed it. Not as it has bee crippled by cheap chinese manufacturers like creality.

    With linear rails for side supports and the nema 24's with 10mm belts an a super rigid frame you could really rack up the speed.

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