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    slicer scaling behaviour... wild...

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    • c310undefined
      c310
      last edited by

      Hi! I need help with simplify3d scaling… I am trying to print figure as below… In the model external size (marked with red) is 29.214mm and internal circle is 6.4 mm.

      Once printed in 100% scale external is 28.9 and internal is 5.0 ☹ once I adjust scale to 101,08 external prints with tiny difference, but internal is still very small. To print internal in right size I need to use 128% scale ☹ but it drives external size far away…

      Which settings should I consider to be changed?

      Many thanks!
      0_1552907286041_5be5c66a-2bca-42fa-bae3-4dae68f3ccf6-изображение.png

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      • OBELIKSundefined
        OBELIKS
        last edited by OBELIKS

        Under Other tab on the Process settings you should have Horizontal size compensation. Change that to 0,7mm
        You should be close for the internal diameter.
        https://forum.simplify3d.com/viewtopic.php?t=2042

        But if you made the model, try increasing the dimensions.

        P3Steel Toolson mk2 - Duet 2 WiFi --> RatRig V-Core with Duet WiFi 1.03
        Original Prusa i3 MK3S

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        • fmaundefined
          fma
          last edited by

          That's a huge différence; you may have some over-extrusion?

          Frédéric

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          • OBELIKSundefined
            OBELIKS
            last edited by

            At first I also thought of over-extrusion, but then also the outside dimension would be bigger, but it's also smaller.
            Something is not completely OK here.

            P3Steel Toolson mk2 - Duet 2 WiFi --> RatRig V-Core with Duet WiFi 1.03
            Original Prusa i3 MK3S

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            • fmaundefined
              fma
              last edited by

              My bad, I mis-read the outer dimensions!

              Frédéric

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              • c310undefined
                c310
                last edited by

                @obeliks

                Under Other tab on the Process settings you should have Horizontal size compensation. Change that to 0,7mm

                thanks! that is a very strange parameter for me. with test i have figured out that -0.25 mm worked with my 101,08 scale.. however that ratio brought down external size 🙂 in my particular case i can live with that, but it is very and very strange...

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                • OBELIKSundefined
                  OBELIKS
                  last edited by

                  Check X and Y steps/mm just to be sure.

                  P3Steel Toolson mk2 - Duet 2 WiFi --> RatRig V-Core with Duet WiFi 1.03
                  Original Prusa i3 MK3S

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                  • c310undefined
                    c310
                    last edited by

                    slicer i guess is a crap... with settings above radial holes are tight as it should be, central one in loose.... in CAD they are all the same..

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                    • fmaundefined
                      fma
                      last edited by

                      I'm pretty sure you have a hardware/firmware configuration issue... There is absolutely no reason S3D changes holes dimensions depending where they are on the plate.

                      Frédéric

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                      • c310undefined
                        c310
                        last edited by

                        CAD settings are below. as well as motor settings. printer is delta

                        M569 P0 S1				; Drive 0 goes forwards
                        M569 P1 S1				; Drive 1 goes forwards
                        M569 P2 S1				; Drive 2 goes forwards
                        M569 P3 S0				; Drive 3 goes forwards (extruder)
                        
                        M350 X16 Y16 E16 I1    			; Set 16x microstepping with interpolation
                        
                        M574 X2 Y2 Z2 S1			; set endstop configuration (all endstops at high end, active high)
                        M666 X0 Y0 Z0				; put your endstop adjustments here, or let auto calibration find them
                        
                        M665 R102 L288.17 B75 H152		; set delta radius, diagonal rod length, printable radius and homed height
                        ; H152 for standart 
                        ; H142 for volcano
                        
                        M92 X80 Y80 Z80				; Set axis steps/mm http://prusaprinters.org/calculator/#stepspermmbelt 
                        
                        M906 X1250 Y1250 Z1250 E700		; Set motor currents (mA) 85% of rated
                        M906 I30				; Set Idle factor to 30%
                        
                        M201 X1000 Y1000 Z1000 E120		; Accelerations (mm/s^2)
                        M203 X20000 Y20000 Z20000 E600		; Maximum speeds (mm/min)
                        M204 P500 T2000				; Maximum Print and Travel acceleration
                        

                        0_1552995177442_1e663d63-9649-41da-a36c-260319435c78-изображение.png

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                        • fmaundefined
                          fma
                          last edited by

                          As @OBELIKS said, re-check M92 values. And as your printer is a delta, re-check the calibration.

                          Frédéric

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