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  • #46
    see here

    It is a Pupilometer.
    See here:

    http://www.neuroptics.com

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    • #47
      That was going to be my next guess!



      Not.
      Free software for calculating bolt circles and similar: Click Here

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      • #48
        I really don't understand the science exactly, but it was a good project.

        Sid

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        • #49
          Sorry for the small size but here are a few from my work. These are all done with Rhino/Flamingo.

          This is a watch I designed for Harley-Davidson


          Some tippet spools for a flyfishing company


          A prototype fishing reel

          Comment


          • #50
            Wow

            Like seriously guys. Can you keep it simple. some of us learners are feeling inadequate. WOW truly amazing stuff. My question would be how long have you spend on those projects?

            Rob

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            • #51
              Originally posted by spkrman15
              Like seriously guys. Can you keep it simple. some of us learners are feeling inadequate. WOW truly amazing stuff. My question would be how long have you spend on those projects?

              Rob
              Ain't that the truth? We got the heavy hitters wading in here now!
              - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
              Thank you to our families of soldiers, many of whom have given so much more then the rest of us for the Freedom we enjoy.

              It is true, there is nothing free about freedom, don't be so quick to give it away.

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              • #52
                After viewing all these wonderful and creative images I want to take my computer and throw it against a wall.



                I've been trying off and on for about a week to make a 3d image of a cog gear on Sketchup. Why sketchup? It's all we have at work. Why? Cause its free!

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                • #53
                  Nothing wrong with free software. I will pointedly ask how many of the numerous online tutorials have you watched?

                  3D CAD has a steep learning curve mainly because the many little tricks that make it easy to use are not at all obvious. Tutorials are very valuable in getting you over the hump.

                  I sketched up some gears as an example. The total time to arrive at the finished model ready for rendering was less than 10 minutes. These images show the steps along the way in sequence:

                  I used a free involute gear plugin to make the gear. Time: ten seconds.

                  Then I pulled it into a three dimensional object with the push/pull tool and copied it in plan view to mesh them together.



                  I drew a circle centred in each one and pulled it to make a shaft.

                  Then drew a rectangle and pulled it for a mounting plate.



                  I stood it up with the rotate tool and drew a line across the bottom to separate a piece to pull out for the base. I then added some colours and textures from the material pallette. Total time maybe 7 minutes.



                  The final step is rendering. This took me quite a while because I used a new free plugin for SketchUp called Shader Light. I haven't actually used it before so it took some playing around to find a good looking setting(s). Including my learning curve for the renderer total time was about an hour.

                  Free software for calculating bolt circles and similar: Click Here

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                  • #54
                    Here are some drawings of the Shay I am working on.



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                    • #55
                      Rookie Machinist, that is some nice looking work. Any pics of the real thing you are building. I'd love to see them and I'm sure others would also.
                      Jonathan P.

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                      • #56
                        Originally posted by Evan
                        Even the highest powered simulations fail miserably near the event horizon. The simulator math blows up as values approach infinity


                        Since anybody entering a black hole would be ripped apart into there molecules or even subatomic particles maybe the program is closer then you think.
                        The shortest distance between two points is a circle of infinite diameter.

                        Bluewater Model Engineering Society at https://sites.google.com/site/bluewatermes/

                        Southwestern Ontario. Canada

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                        • #57
                          Since anybody entering a black hole would be ripped apart into there molecules or even subatomic particles maybe the program is closer then you think.
                          Not necessarily. It is possible to have a very large area with a large accumulation of matter that exceeds the critical density to form a black hole. This type of black hole would be very different from the usual collapsed star that has then gobbled up everything that encounters it. A so called "low density" black hole would have no observable Swartzchild radius but it would still exist. You could pass through it with no clue that you had just entered a region from which you could never leave. The critical average density required for this to happen can be exceedingly low, much less than the density of air.

                          See the last item on this page:

                          http://blogs.discovermagazine.com/ba...t-black-holes/
                          Free software for calculating bolt circles and similar: Click Here

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                          • #58
                            Right now the Shay is sitting on the drawing board, bad economy and a baby on the way have cut into the fun budget. When I do get going on it I will post pics though.

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                            • #59
                              Originally posted by aostling
                              Perhaps even more fun if you had a physics engine on your computer. http://en.wikipedia.org/wiki/Physics_engine. I don't have one on my Mac, but I'm ready for it when it becomes affordable and easy enough to use.
                              I wouldn't hold your breath on that Allan

                              Ageia's PhysX add-in card was a disaster. It was slower than running the game physics on the CPU host. Ageia did write a very nice PhysX API (game developer's library), which Nvidia bought and extensively enhanced. The physics calculations run on the GPU (the graphics card).

                              Many modern games run the PhysX API. Even hardcore ATI fans will buy an additional Nvidia graphics card to run the game physics

                              http://www.nzone.com/object/nzone_physxgames_home.html
                              "Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did."

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                              • #60
                                ..' thought I'd throw this guy's work into the thread. Chris is quite amusing at times.
                                Here's just one portion of his posts:
                                http://www.machsupport.com/forum/ind...3654#msg103654

                                This is just one of Chris's slightly amusing but informative vids:
                                http://www.youtube.com/watch?v=-rxwhEzLh7E

                                Here's the cad video using Rhino.
                                http://www.youtube.com/watch?v=hRnFOA1a7pU
                                http://www.youtube.com/watch?v=o5QVKt2i_SU

                                Last edited by Deja Vu; 07-28-2010, 10:26 AM.
                                John M...your (un)usual basement dweller

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