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    Damper on Nema for corexy ?

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    • piperswundefined
      pipersw
      last edited by T3P3Tony

      Anybody have used dumpers for X and Y steppers on coreXY ?

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      • Phaedruxundefined
        Phaedrux Moderator
        last edited by

        Dampers?

        I use a cork gasket. Like this: https://www.amazon.com/SYlive-Gasket-Damper-Stepper-Printer/dp/B0787FN7CM

        I have some of the larger nema dampers but didn't bother with them when the cork worked well enough. https://www.amazon.ca/Absorber-Stepper-Vibration-Damper-Nema17/dp/B072F8M6J6

        Z-Bot CoreXY Build | Thingiverse Profile

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        • piperswundefined
          pipersw
          last edited by

          thanks, I will try damper on X and Y so.

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          • antlestxpundefined
            antlestxp
            last edited by

            any reason you want to use dampers?

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            • Dougal1957undefined
              Dougal1957
              last edited by

              IMHO Dampers are a bad idea on an axis that has a toothed pulley on the motor they can cause the axis of that motor to tilt under the tension of the belts!

              Doug

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              • Nightreaverundefined
                Nightreaver
                last edited by Nightreaver

                I have a corexy and dual Z stepper, and have damper on all of them, even on extruder.
                0_1560363245670_9cb591f2-bc85-401c-8733-cedcc7d04773-image.png
                And I have no issues from that.
                The loudest thing on my printer is the stock part-cooling fan 😄

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                • zaptaundefined
                  zapta
                  last edited by zapta

                  [adding to an old thread]

                  I struggled with movement noise for some time and the problem disappeared when I added dampers to the X/Y steppers of my HEVO. My printer now sounds great. Apparently the noise was caused by motor vibrations that were transmitted to the 3030 frame and at time caused it to resonate.

                  To verify that X/Y dampers will help your CoreXY, disconnect the belts, and try to reproduce the noise with gcode like the one below (adjust the speed range as needed):

                  G91   ; relative
                  ; Move motor at different speeds.
                  ; Use X for motor 1, Y for motor 2
                  ; These moves do not require homing.
                  G1 X300 H2 F2400 
                  G1 X300 H2 F2600  
                  G1 X300 H2 F2800 
                  G1 X300 H2 F3000 
                  G1 X300 H2 F3200  
                  ; ...
                  

                  Once you are able to reproduced the noise, remove the motor from the frame, hold it in suspended in your hand and run the script again. If the noise disappeared, your printer will benefit from dampers. I my case I had to change the design of the motors mounts to compensate for the additional 6mm of clearance the dampers add.

                  https://www.amazon.com/gp/product/B07GWN6V89

                  IMG-1851.JPG

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                  • whosrdaddyundefined
                    whosrdaddy
                    last edited by

                    Don't use dampers, they may lower the noise but they do weaken the rigidness of your motion system (and thus introduce positioning errors)!

                    A Former User? zaptaundefined Phaedruxundefined 3 Replies Last reply Reply Quote 0
                    • A Former User?
                      A Former User @whosrdaddy
                      last edited by

                      @whosrdaddy said in Damper on Nema for corexy ?:

                      Don't use dampers, they may lower the noise but they do weaken the rigidness of your motion system (and thus introduce positioning errors)!

                      Just wondering, would any thermal insulation provided by the dampener transfer less heat to printed parts and as such have a positive effect on deflection in that regard? Maybe insignificant?

                      whosrdaddyundefined 1 Reply Last reply Reply Quote 0
                      • whosrdaddyundefined
                        whosrdaddy @A Former User
                        last edited by whosrdaddy

                        @bearer said in Damper on Nema for corexy ?:

                        @whosrdaddy said in Damper on Nema for corexy ?:

                        Don't use dampers, they may lower the noise but they do weaken the rigidness of your motion system (and thus introduce positioning errors)!

                        Just wondering, would any thermal insulation provided by the dampener transfer less heat to printed parts and as such have a positive effect on deflection in that regard? Maybe insignificant?

                        Very simple, use metal parts to mount your motor 😉
                        I use these from Motedis, here is their informative Video.
                        There is also a newer version which allows for corner mounting.

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

                          @whosrdaddy said in Damper on Nema for corexy ?:

                          Very simple, use metal parts to mount your motor

                          Hehe, thats the plan. But I was just curious if the dampener thing was all back and white with printed parts.

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                          • zaptaundefined
                            zapta @whosrdaddy
                            last edited by

                            @whosrdaddy said in Damper on Nema for corexy ?:

                            Don't use dampers, they may lower the noise but they do weaken the rigidness of your motion system (and thus introduce positioning errors)!

                            I didn't observe any of that on my printer. The dampers I use are very stiff and I could tighten the belts to my liking. I was actually surprised how stiff they are, must be a material that absorbs high frequencies but not static force.

                            I got these no names ones from amazon
                            https://www.amazon.com/gp/product/B07GWN6V89 but Moon has here some information on their dampers https://www.moonsindustries.com/series/dampers-a020202

                            My printer is definitely a better printer now. YMMV.

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                            • Phaedruxundefined
                              Phaedrux Moderator @whosrdaddy
                              last edited by

                              @whosrdaddy said in Damper on Nema for corexy ?:

                              Don't use dampers, they may lower the noise but they do weaken the rigidness of your motion system (and thus introduce positioning errors)!

                              They're quite a bit stiffer than you'd think. Considering a lot of us are using printed parts....

                              Z-Bot CoreXY Build | Thingiverse Profile

                              Luke'sLaboratoryundefined 1 Reply Last reply Reply Quote 0
                              • Luke'sLaboratoryundefined
                                Luke'sLaboratory @Phaedrux
                                last edited by

                                @Phaedrux said in Damper on Nema for corexy ?:

                                @whosrdaddy said in Damper on Nema for corexy ?:

                                Don't use dampers, they may lower the noise but they do weaken the rigidness of your motion system (and thus introduce positioning errors)!

                                They're quite a bit stiffer than you'd think. Considering a lot of us are using printed parts....

                                Yeah I wouldn't expect those kinds of dampers would be any less rigid than printed ones!

                                Luke
                                http://lukeslab.online

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