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Holes in a cylinder

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  • L Offline
    Leggie
    last edited by 17 Feb 2021, 15:46

    Hi I’m trying to draw a 142mm cylinder with it covered in 3mm holes at 5mm centers
    It’s to make a filter basket
    Is there an extension that will help
    Thanks Dean

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    • J Offline
      juju
      last edited by 17 Feb 2021, 20:00

      Draw the cylinder in an unfolded fashion, draw the holes and array copy as desired, the use the extension "Flowify" to turn it into a cylinder.

      Save the Earth, it's the only planet with chocolate.

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      • L Offline
        Leggie
        last edited by 18 Feb 2021, 13:36

        Ok thanks

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        • B Offline
          Box
          last edited by 18 Feb 2021, 14:15

          If you work out the logic of the shape you can just use arrays.
          Here I roughly worked out the number of segments needed then created one hole and made two arrays.
          This hole is 1.5mm radius and the face is a 5mm square, and the cylinder is 142mm radius with 168 segments. It's not accurate, you need the correct circumference then divide by the 5mm centers, to get the true number of segments. I just did this by eye.
          That was my guess from your info.
          If you need thickness then I would make the hole with two faces in a wedge format.

          https://i.imgur.com/YeGCYXb.gif

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          • L Offline
            Leggie
            last edited by 18 Feb 2021, 14:55

            Hi I managed to draw it by taking one segment of the circle (80 segments), pulling it up to the length and cutting the holes in that
            50 holes per segment
            Then I copied and rotated it 80 times, so now we have 4000 holes
            It was scaled up x10, I tried to scale it back down but got the spinning beach ball and it just froze up
            Any idea how to clean it up

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            • B Offline
              Box
              last edited by 18 Feb 2021, 14:57

              Use the bare minimum of segments for your holes.

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              • L Offline
                Leggy
                last edited by 18 Feb 2021, 15:07

                the file is too big to send

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                • B Offline
                  Box
                  last edited by 18 Feb 2021, 15:12

                  I'm not sure why you want to send it.
                  Just start again and use fewer segments in the circles for the holes, and be patient, doing anything with 4000 holes can take time.
                  And I'm off to bed.

                  By the way, how many users accounts do you have?

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                  • L Offline
                    Leggie
                    last edited by 18 Feb 2021, 15:27

                    I’m on the minimum
                    Only one account

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                    • B Offline
                      Box
                      last edited by 18 Feb 2021, 15:36

                      What is the minimum?

                      How can you only have one and yet you are leggie in one post and leggy in another.

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                      • P Offline
                        pbacot
                        last edited by 18 Feb 2021, 18:36

                        @box said:

                        anything with 4000 holes can take time.
                        And I'm off to bed.

                        As they found out in Blackburn, Lancashire.

                        MacOSX MojaveSketchUp Pro v19 Twilight v2 Thea v3 PowerCADD

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                        • L Offline
                          Leggy
                          last edited by 18 Feb 2021, 18:40

                          I signed into my iPad and forgot which way it was spelt
                          24 segments

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                          • D Offline
                            Dave R
                            last edited by 18 Feb 2021, 20:42

                            @pbacot said:

                            As they found out in Blackburn, Lancashire.

                            Fortunately I'd finished my coffee before reading that.

                            Etaoin Shrdlu

                            %

                            (THERE'S NO PLACE LIKE)

                            G28 X0.0 Y0.0 Z0.0

                            M30

                            %

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                            • B Offline
                              Box
                              last edited by 18 Feb 2021, 21:21

                              24 is the default not the minimum. You could use as few as 8 and still have the appearance of a smooth circle. The minimum is 3.

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                              • G Offline
                                GD3Design
                                last edited by 20 Feb 2021, 12:20

                                @pbacot said:

                                @box said:

                                anything with 4000 holes can take time.
                                And I'm off to bed.

                                As they found out in Blackburn, Lancashire.
                                🤣 🤣 🤣 🤣 🤣

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                                • B Offline
                                  Box
                                  last edited by 20 Feb 2021, 13:11

                                  Just to keep you all happy.


                                  Holly beatles.jpg

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                                  • S Offline
                                    slbaumgartner
                                    last edited by 20 Feb 2021, 20:11

                                    Good thing the holes were very small!

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