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Can deform 4mm print glass

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  • undefined
    peter247
    last edited by 2 Jun 2021, 10:26

    Hi , building up my blv cube and doing a little setting up , homing , offsets , levelling etc.
    This is my first test of mesh levelling with the 4mm aluminium plate which came with my cr10s pro v1 and it's glass which replaced it.
    ( It is just a test waiting for a ALUMINIUM TOOLING PLATE .)
    This is cold and the aluminium plate is no way level , BUT is this the glass or have I got a mechanical error somewhere ?
    Screenshot 2021-06-02 110738.png
    Still missing some screws so can't print yet , which should tell me if I've got z problems.

    Ender 5 plus linear rail and hemera powered by duet 2 wifi , CR10s pro v1 with bltouch mostly stock , BLV mgn Cube slowly being built powered by duet 3 mini 5+

    undefined undefined 2 Replies Last reply 2 Jun 2021, 10:34 Reply Quote 0
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      Martin1454 @peter247
      last edited by 2 Jun 2021, 10:34

      @peter247 What type of probe do you have? the result looks acceptable, but if anything my guess is on the probe or mechanical issue

      undefined 1 Reply Last reply 2 Jun 2021, 10:35 Reply Quote 0
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        peter247 @Martin1454
        last edited by 2 Jun 2021, 10:35

        @martin1454 Bltouch

        Ender 5 plus linear rail and hemera powered by duet 2 wifi , CR10s pro v1 with bltouch mostly stock , BLV mgn Cube slowly being built powered by duet 3 mini 5+

        undefined 1 Reply Last reply 2 Jun 2021, 12:53 Reply Quote 0
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          jens55 @peter247
          last edited by 2 Jun 2021, 12:53

          @peter247, for a standard off the shelf printer, this is about as good as it gets, Be happy !

          undefined 1 Reply Last reply 2 Jun 2021, 16:47 Reply Quote 0
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            dc42 administrators
            last edited by 2 Jun 2021, 13:36

            @peter247 what type of machine is the CR10S pro V1? Does the bed move in Y, or the gantry? If the gantry moves in both X and Y then I think the Y gantry is sagging a little.

            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

            undefined 1 Reply Last reply 2 Jun 2021, 16:37 Reply Quote 0
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              deckingman @peter247
              last edited by 2 Jun 2021, 14:55

              @peter247 said in Can deform 4mm print glass:

              .................................. This is cold and the aluminium plate is no way level , BUT is this the glass or have I got a mechanical error somewhere ?....................

              It's pretty close, but it's impossible to discriminate between the gantry sagging or the glass being bowed by looking at the height map. I find a precision straight edge is invaluable. With one of those and good lighting, it's quite easy to determine if the glass (or aluminium plate) is flat or not. If you don't want to spend too much money, look for a plasterers feather edge - something like this https://www.amazon.co.uk/Faithfull-Feather-Edge-Scale-Fe48/dp/B0001IWKOA/ref=asc_df_B0001IWKOA/?tag=googshopuk-21&linkCode=df0&hvadid=309808827530&hvpos=&hvnetw=g&hvrand=2730341869416505663&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9046150&hvtargid=pla-588189221888&psc=1&th=1&psc=1

              Ian
              https://somei3deas.wordpress.com/
              https://www.youtube.com/@deckingman

              1 Reply Last reply Reply Quote 0
              • undefined
                peter247 @dc42
                last edited by peter247 6 Feb 2021, 16:49 2 Jun 2021, 16:37

                @dc42 The cr10s pro v1 moves the Y axis , But I'm just use it for it's metal plate , so the cr10s pro is just used for parts until I get something better, for this core xy I'm working on .
                Not sure how much sag you can get with linear rails ?

                Ender 5 plus linear rail and hemera powered by duet 2 wifi , CR10s pro v1 with bltouch mostly stock , BLV mgn Cube slowly being built powered by duet 3 mini 5+

                1 Reply Last reply Reply Quote 0
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                  peter247 @jens55
                  last edited by 2 Jun 2021, 16:47

                  @jens55 It is worse than off the self , it's a self build so there is a million ways I could have built it wrong.
                  But it is a start and I haven't finished building it yet, waiting for screws which hold the extruder in place, etc .

                  It was just a question of can the printer's glass bed bow than much ?

                  Ender 5 plus linear rail and hemera powered by duet 2 wifi , CR10s pro v1 with bltouch mostly stock , BLV mgn Cube slowly being built powered by duet 3 mini 5+

                  undefined undefined 2 Replies Last reply 2 Jun 2021, 16:52 Reply Quote 0
                  • undefined
                    dc42 administrators @peter247
                    last edited by dc42 6 Feb 2021, 16:53 2 Jun 2021, 16:52

                    @peter247 said in Can deform 4mm print glass:

                    The cr10s pro v1 moves the Y axis

                    Do you mean that it moves the bed in the Y axis?

                    It was just a question of can the printer's glass bed bow than much ?

                    It's more likely that the Y gantry (if it has one) is sagging in the middle, especially if it is carrying the weight of the X motor.

                    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

                    undefined 1 Reply Last reply 2 Jun 2021, 17:18 Reply Quote 0
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                      peter247 @dc42
                      last edited by 2 Jun 2021, 17:18

                      @dc42 the height map is from this :

                      https://www.blvprojects.com/blv-mgn-cube-3d-printer

                      Ender 5 plus linear rail and hemera powered by duet 2 wifi , CR10s pro v1 with bltouch mostly stock , BLV mgn Cube slowly being built powered by duet 3 mini 5+

                      1 Reply Last reply Reply Quote 0
                      • undefined
                        jens55 @peter247
                        last edited by 2 Jun 2021, 17:54

                        @peter247 said in Can deform 4mm print glass:

                        @jens55 It is worse than off the self , it's a self build so there is a million ways I could have built it wrong.

                        It was just a question of can the printer's glass bed bow than much ?

                        Neither one of my two operational printers has a build bed that flat. I would be very happy indeed with that outcome. Mind you both are bed slingers so several levels below what you are building ....

                        Yes, a glass bed can bow that much. Rotate the glass 90 degrees and do another bed probe to see if the hump moves with the glass.

                        undefined undefined 2 Replies Last reply 2 Jun 2021, 20:04 Reply Quote 1
                        • undefined
                          Phaedrux Moderator @jens55
                          last edited by 2 Jun 2021, 20:04

                          @jens55 said in Can deform 4mm print glass:

                          Rotate the glass 90 degrees and do another bed probe to see if the hump moves with the glass.

                          👆

                          Z-Bot CoreXY Build | Thingiverse Profile

                          1 Reply Last reply Reply Quote 0
                          • undefined
                            peter247 @jens55
                            last edited by 3 Jun 2021, 13:04

                            @jens55 Not sure if this is my only problem .

                            It was a fitting what I had in hand to test it out and my countersunk screws was a little short so could not fit a nut to hold the screw in place , So I think that the glass bed may have been resting on the screws edges and not the bed it's self .
                            Now I have got all my remaining screw I hope it is time to do a test print , which should show up any z wobble and out of squareness.

                            Ender 5 plus linear rail and hemera powered by duet 2 wifi , CR10s pro v1 with bltouch mostly stock , BLV mgn Cube slowly being built powered by duet 3 mini 5+

                            undefined 1 Reply Last reply 3 Jun 2021, 14:36 Reply Quote 0
                            • undefined
                              peter247 @peter247
                              last edited by 3 Jun 2021, 14:36

                              @jens55 @dc42 @deckingman

                              Now this is better Screenshot 2021-06-03 153344.png

                              Ender 5 plus linear rail and hemera powered by duet 2 wifi , CR10s pro v1 with bltouch mostly stock , BLV mgn Cube slowly being built powered by duet 3 mini 5+

                              1 Reply Last reply Reply Quote 1
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