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    My labor of Love/Hate

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    My Duet controlled machine
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    • Coffeeundefined
      Coffee
      last edited by

      Started this from scratch 3 months ago and I will not get to put the finishing touches on it for a few days, so I thought I would post a teaser or 3 for now. Hopefully a full rundown of the machine, some video and a nice print to show within a week. The Duet board has been a pleasure to learn and begin to use!

      Much cleanup left here.

      The Back

      The Front

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      • Kezatundefined
        Kezat
        last edited by

        Cool! Looking forward to more details and specs:)

        Are you using a 3 or 4 point leveling system? I ask because my custom printer has a similar 2020 (?) bed frame I experimented with a single beam in the center (T shape) to support the front center of the bed and also the way you have it with two beams on each side. (U shape)
        It looked like to me that having a single beam in the center would allow less flex for the bed. (in the roll direction if you will) My thinking was if one side flexed up 1 mm and the other 1mm down it would be a 2mm difference, but with the T shape the flex in theory would only be that 1mm (for a example) but i guess you would have more weight on one beam. Perhaps I'm just overthinking it:)

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        • Coffeeundefined
          Coffee
          last edited by

          Thank you for the reply! It's 3- point and drilled for 4 if for some reason this does not workout I'll have something else to try. I have no idea how this will play, I just got the bed on this eve. so only time will tell. I did not adhere many 'norms' in this adventure, I just built what was in my head and felt right to me.

          Print bed arms

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          • T3P3Tonyundefined
            T3P3Tony administrators
            last edited by

            Interesting idea using a belt and two Z motors - presumably to keep them in sync even when powered down?

            Have you tried with just using one?

            www.duet3d.com

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            • Coffeeundefined
              Coffee
              last edited by

              Yes on the belt, to avoid sync. issues.

              Hit a snag. Got most everything squared away and had a couple pretty good looking test prints on a 200 x 200 build plate I had clamped to the bed but when I started the first and rather large in area print on the 430 x 330 piece of PEI things started looking wonky right off the bat. Dang it, the aluminum bed has a slight wave on its right side. Not sure what I'm gonna do next but I do have a couple friends in the machine shop field, I may try and get one of them to do some mill work.
              I do want to give credit for the air inlet grill to rue_mohr (https://www.thingiverse.com/thing:706812), the PanelDue case to agniusm (https://www.thingiverse.com/thing:2495311) and inspiration for the belt tensioners to Motorpixiegimbals (https://www.thingiverse.com/thing:2767020).
              More to come if more happens.

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              • Phaedruxundefined
                Phaedrux Moderator
                last edited by

                If you have a Z-probe you could do mesh bed compensation to correct for the bend.

                Z-Bot CoreXY Build | Thingiverse Profile

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                • gen2engundefined
                  gen2eng
                  last edited by

                  As a stop gap for the wave, a short thin strip of kapton tape in the right locations will work as a stable shim. My cast aluminum tool plate bed has a slight cup centered in one axis that starts about a 1/4 the way from the other axis. I believe the shop I ordered the plate from used a shear to cut the plate and deformed it a bit.

                  I used the mesh compensation and heat map to understand the bed warp and shimmed as needed.

                  My PEI surface is still heated evenly despite the small gap from shimming.

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                  • Coffeeundefined
                    Coffee
                    last edited by

                    Great suggestions! I don't have a Z-probe but there is some kapton tape sitting about.
                    The gantry was a tad out of square too so that is all back out. Hopefully with my new laser measuring thing I can pull that all into a tighter tolerance.

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                    • Coffeeundefined
                      Coffee
                      last edited by

                      With most of the hardware kinks worked out, it's time to fine tune the printing. I figuered I'd start out with something kinda fun before doing all the XYZ blocks, Benchys, circles, towers and squares. So in appreciation of a really neat controller board:
                      https://vimeo.com/267332484
                      The video is 3X actual speed.

                      T3P3Tonyundefined Phaedruxundefined 2 Replies Last reply Reply Quote 5
                      • dc42undefined
                        dc42 administrators
                        last edited by

                        Looks good!

                        Duet WiFi hardware designer and firmware engineer
                        Please do not ask me for Duet support via PM or email, use the forum
                        http://www.escher3d.com, https://miscsolutions.wordpress.com

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                        • T3P3Tonyundefined
                          T3P3Tony administrators @Coffee
                          last edited by

                          @coffee nice 😄

                          www.duet3d.com

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                          • Coffeeundefined
                            Coffee
                            last edited by

                            Thanks Guys !!!!!

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                            • Phaedruxundefined
                              Phaedrux Moderator @Coffee
                              last edited by

                              @coffee STL? 👍

                              Z-Bot CoreXY Build | Thingiverse Profile

                              Coffeeundefined 1 Reply Last reply Reply Quote 0
                              • Coffeeundefined
                                Coffee @Phaedrux
                                last edited by

                                @phaedrux "The Powered by" one? I had actually deleted all the files for the original but per your request I created another. It is not exactly as the first I'm sure, but should be close enough for the eyeball.
                                Here is the direct dl link form Dropbox:

                                https://www.dropbox.com/s/zgcy0y74gtyhdkq/pwrdbyd3d.stl?dl=1

                                If for some reason the dl or the stl does not work, let me know.

                                Cheers!

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

                                  @coffee Perfect, thanks!

                                  Z-Bot CoreXY Build | Thingiverse Profile

                                  Coffeeundefined 1 Reply Last reply Reply Quote 0
                                  • Coffeeundefined
                                    Coffee @Phaedrux
                                    last edited by

                                    @phaedrux Excellent!

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                                    • Coffeeundefined
                                      Coffee
                                      last edited by

                                      Been doing the 'dialing in' thing and decided on the NASA wrench as the first print to test accuracy. It's looking pretty good so far! I'll get better images once completed and maybe y'all can help me with what things look like they could use more adjusting.

                                      NASA WRENCH

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                                      • Coffeeundefined
                                        Coffee
                                        last edited by

                                        This was at 30% infill with 2mm solid top and bottom. Looks decent but much room for imporvement. Any advice on getting things better much appreciated!

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                                        • Phaedruxundefined
                                          Phaedrux Moderator
                                          last edited by

                                          PLA or ABS? That layer seperation in the 3rd picture is a little concerning. Otherwise looks ok. Kind of hard to make out fine detail in the pictures.

                                          Z-Bot CoreXY Build | Thingiverse Profile

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                                          • Coffeeundefined
                                            Coffee
                                            last edited by

                                            It's ABS. I can't seem to get a handle on the nozzle temp and extrusion. On the Creatbot with the same filament I get really smooth layers and shiny surfaces but with the same temps etc on this one, at the same time, it seems to be under and over extruding and under over nozzle temp. I'll figure it out evetually. It on ly took me $300 in better parts and several months to get the Creatbot up to par and it was supposed to be a professional solution right out of the box. I am actually very satisfied that it prints at all and I have found new and total respect for anyone that does a build from scratch or a kit as this, in theory, should be fairly straightforward and fairly easy done, IT IS NOT! ☺

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