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    Suggestions for hight precision CoreXY

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    • jay_s_ukundefined
      jay_s_uk
      last edited by

      Have a look at this.
      thingiverse.com/thing:3843001

      Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

      1 Reply Last reply Reply Quote 2
      • mrehorstdmdundefined
        mrehorstdmd
        last edited by

        The primary determinant of frame sturdiness is the cross sectional size of the members. If you use 20x20 t-slot, don't expect sturdy, even if you add $300 worth of corner gussets. OTOH, if you use some of the money you budgeted for expensive corner gussets and hardware to buy larger t-slot instead, you will get a sturdy frame without all the extra hardware. 40x40 t-slot is pretty rigid stuff for most 3D printer sizes, including 300x300x300 mm print capacity. Adding rigid panels for enclosure can increase overall rigidity a lot, so you might be able to use smaller t-slot than if the printer were open.

        If you build a rigid frame and drive the Z axis with a single motor, you probably won't need autoleveling. If you use 3 motors to drive the Z axis, you will need autoleveling because you used 3 motors.

        If you're going to print ABS/nylon/PC, etc., you will want to use a kinematic mount for the bed to allow it to expand when heated.

        https://drmrehorst.blogspot.com/

        1 Reply Last reply Reply Quote 1
        • giostarkundefined
          giostark
          last edited by giostark

          @mrehorstdmd said in Suggestions for hight precision CoreXY:

          kinematic mount

          Ok for the kinematic mount, added to the features to have.

          High level Kit (pre-assembled) ?

          Phaedruxundefined mrehorstdmdundefined 2 Replies Last reply Reply Quote 0
          • Phaedruxundefined
            Phaedrux Moderator @giostark
            last edited by

            @giostark Definitely study the design of the jubilee. If tool changing is of interest to you.

            Railcore is very solid as well.

            There is the BLV cube.

            Voron2 (a bit needlessly complicated, but nice)

            Z-Bot CoreXY Build | Thingiverse Profile

            zaptaundefined 1 Reply Last reply Reply Quote 1
            • jens55undefined
              jens55
              last edited by

              I am hoping that somebody will put together a full Jubilee kit with the option of going to a Tim Taylor sized model! <insert manly grunt here>
              Being located in Canada makes getting the individual bits VERY expensive due to freight.

              1 Reply Last reply Reply Quote 0
              • giostarkundefined
                giostark
                last edited by giostark

                edit:
                In Europe I just found this one:
                https://www.ratrig.com/3d-printing-cnc/3d-printer-kits/all-3d-printer-kits/rat-rig-v-core-pro-linear-rail-701.html
                Did you ever listen of them? Can be they trusted?
                Ok , seems an other Chinese crappy brand. And is expensive too !
                Not original linear rail , not auto bed leveling. And looking at some videos the machine dance when go a little fast.
                They mount those Chinese rails?!
                https://www.youtube.com/watch?v=5phwhocuXWc
                The RailCore II is completely an other product.

                Outstanding...before I have to manage the curse of a crappy delta frame πŸ’© and when I realize that is time to change , the curse try to keep you with your best enemy making unavailable the substitution 😑 😱
                BLV cube is available on aliexpress so NEVER buy there again.
                The Voron2 didn't have the auto bed leveling.

                Phaedruxundefined A Former User? 2 Replies Last reply Reply Quote 0
                • Phaedruxundefined
                  Phaedrux Moderator @giostark
                  last edited by

                  @giostark said in Suggestions for hight precision CoreXY:

                  The Voron2 didn't have the auto bed leveling.

                  The voron bed is fixed and the X Y gantry is leveled.

                  Z-Bot CoreXY Build | Thingiverse Profile

                  1 Reply Last reply Reply Quote 0
                  • A Former User?
                    A Former User @giostark
                    last edited by

                    @giostark said in Suggestions for hight precision CoreXY:

                    The Voron2 didn't have the auto bed leveling.

                    if the machine is solid there is no real need for such things imho

                    1 Reply Last reply Reply Quote 0
                    • Phaedruxundefined
                      Phaedrux Moderator
                      last edited by

                      @bearer Well I did say it was needlessly complex. You know what they say, if you can't make it perfect, make it adjustable.

                      Z-Bot CoreXY Build | Thingiverse Profile

                      A Former User? 1 Reply Last reply Reply Quote 0
                      • A Former User?
                        A Former User @Phaedrux
                        last edited by

                        @Phaedrux said in Suggestions for hight precision CoreXY:

                        if you can't make it perfect, make it adjustable.

                        absolutely, and then if its reasonably solid it'll stay adjusted which imho is better than autoleveling every print

                        1 Reply Last reply Reply Quote 0
                        • mrehorstdmdundefined
                          mrehorstdmd @giostark
                          last edited by mrehorstdmd

                          @giostark I don't know of any bed kits that are kinematic, but it isn't too had to DIY.

                          Start with 3 point support for bed plate- two ball head screws (or acorn nuts), and one "normal" screw:

                          alt text

                          Put one of the ball heads in a chamfered hole in the plate- this will be the reference adjuster:

                          alt text

                          And put the other ball head in a chamfered slot. This will be the pitch adjuster. Don't worry, they don't have to be milled- the slot can be cut with a saw and then filed a little to make a smooth edge for the ball to sit in. The plate is going to expand less than 1 mm, so the slot doesn't need to be long.

                          The third screw, the roll adjuster- just contacts the smooth underside of the plate.

                          At each screw the plate is free to tilt when you're leveling the bed. At the slot the plate is free to expand in the direction away from the reference screw, and tilt as needed while leveling the bed.

                          At the roll screw the plate is free to expand in X and Y.

                          Springs hold the plate down on the support.

                          See: https://drmrehorst.blogspot.com/2017/07/ultra-megamax-dominator-3d-printer-bed.html
                          and https://drmrehorst.blogspot.com/2019/04/more-changes-to-ummds-z-axis.html

                          Once you understand the basic concept, you can create this type of mount in many different ways. The slot doesn't have to be milled into the plate- it can be two parallel metal bars that are screwed to the plate. You can also invert the mount and put the ball head screws in the plate and the hole and slot on the support.

                          Leveling is easy. Adjust pitch, then roll. Done. If the assembly is solid, you won't have to do it again.

                          https://drmrehorst.blogspot.com/

                          jballard86undefined 1 Reply Last reply Reply Quote 4
                          • giostarkundefined
                            giostark
                            last edited by

                            WOW thanks mrehorstdmd !!!
                            I'm already entering in this mode...of the CoreXY , I mean.
                            Hope with a good hardware finally I will get some satisfaction.

                            1 Reply Last reply Reply Quote 0
                            • giostarkundefined
                              giostark
                              last edited by

                              Some one of you know where to found the RailCore II Kit? Or maybe a good used one. It seems sold out everywhere 😞

                              1 Reply Last reply Reply Quote 0
                              • Phaedruxundefined
                                Phaedrux Moderator
                                last edited by

                                Normally I'd say Filastruder but I see they are sold out as well. They are likely experiencing the same supply constraints as everyone else now due to covid.

                                @kraegar or @elmoret have any comment?

                                Z-Bot CoreXY Build | Thingiverse Profile

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                                • elmoretundefined
                                  elmoret
                                  last edited by

                                  We recently made the decision to discontinue doing business with ProjectR3D, this resulted in us also stopping kit sales as some of the kit components come from ProjectR3D. We still have some stock, feel free to reach out to us using the contact page at Filastruder.com.

                                  1 Reply Last reply Reply Quote 1
                                  • wescundefined
                                    wesc
                                    last edited by

                                    Check the railcore discord. A used rc with first class components ya was posted about 10 days ago.

                                    CroXY - Crossed Gantry Printer, Ultibots D300VS+, Custom CoreXYU

                                    1 Reply Last reply Reply Quote 0
                                    • fmaundefined
                                      fma
                                      last edited by

                                      I'm about to re-build a new CoreXY, and I think it will be something cloe to the HevORT:

                                      https://www.youtube.com/watch?v=T-IX8h-ssbs&list=PLY5rp1lSfPHDdxeNpCljgwThos8GBTOFE

                                      I especially like the bed, which allows 5 axis printing:

                                      https://www.youtube.com/watch?v=aL7pEEHTTe4
                                      https://www.youtube.com/watch?v=FsdU0JJdxeQ

                                      The problem is they communicate on Facebook 😞

                                      FrΓ©dΓ©ric

                                      1 Reply Last reply Reply Quote 1
                                      • giostarkundefined
                                        giostark
                                        last edited by giostark

                                        Finally , I'm in contact with Peter of Hightemp3D (EU channel). Seems all the stuffs he have are CNC milled components and laser cut parts. Misumi rails, etc etc. Also the kinematic bed will be included, full metal extruder and so on.
                                        I'll update this post with the moving 😊
                                        Then I'll try to keep also the delta. I'll produce by myself the top/bottom frame, then buy new towers and linear rail.
                                        Thanks everyone for the suggestions. πŸ‘

                                        HighTemp3Dundefined 1 Reply Last reply Reply Quote 0
                                        • zaptaundefined
                                          zapta @Phaedrux
                                          last edited by zapta

                                          @Phaedrux said in Suggestions for hight precision CoreXY:

                                          Voron2 (a bit needlessly complicated, but nice)

                                          OR the Voron VZero. Simpler, compact, stiff and fast.

                                          https://www.youtube.com/watch?v=2ryWSUgJvHw&t=440s

                                          A Former User? 1 Reply Last reply Reply Quote 0
                                          • A Former User?
                                            A Former User @zapta
                                            last edited by A Former User

                                            @zapta said in Suggestions for hight precision CoreXY:

                                            VZero

                                            I'm very tempted indeed, shame its tricky to get 15mm alu locally

                                            (edit: oh my, they have a sourcing guide with aliexpress links for most things, incl alu profile kits and belt/pulley kits. unfortunately hemera is on the way so it'll be a while for a voron)

                                            1 Reply Last reply Reply Quote 1
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