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Thread: Kudos to the Solidworks Team

  1. #11
    rwanttaja's Avatar
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    Quote Originally Posted by cwilliamrose View Post
    Just getting into your models Ron. Is the assembly a single part you will 3D print or is it meant to be separate parts in your application? I can do it either way but if you're planning to to print the part as one piece it should be modeled that way.
    It was originally intended to be a single part. However, my printer didn't like the overhangs, and the slicer added a bunch of supports which are just too involved to try to clean up.

    I then went to a second version where the vertical parts were split in two.... a lower section that went into the circular base and barely stuck out above it, and a separate upper portion. That printed very nicely. However, I did re-slice the original single-piece part and turned off the automatic supports. The printer did quite well. Left some bits of plastic slag at some edges, and the arcs as the bottom of the verticals are a bit rough. Should clean up OK with sandpaper and files. Not SW's fault, it's just a limitation of the printer.

    This picture shows the final version, a half-scale one that I tested first, and an old-school sight that was my actual first attempt at 3D modelling using the SW tutorials. The flaws I mentioned in the verticals are visible.


    Quote Originally Posted by cwilliamrose View Post
    Here's a link to the one piece version I did.
    Thanks much. Looking into that gave me a lot of insight into how to do it better.

    Quote Originally Posted by cwilliamrose View Post
    I have several comments on your models.

    First, you don't want to use multiple sketch entities to describe simple profiles. Your bracket has 25 entities (lines and splines but no arcs) where my cleaned up version has 14 lines and arcs, no splines. The problem with using so many entities in a profile is that each one creates a separate face which makes the model look cluttered and the file size will be larger to store all that extraneous data. Making a part or even a drawing of a part generated from a model like this becomes very difficult.
    I think this is a by-product of importing the vertical pieces as a DXF. The original was a polygon with line segments simulating curves, and it imported with a lot more entities than were needed.

    At the time, I didn't realize one could "cascade" sketch features (add arcs to a polygon, for instance) and hadn't figured out (yet) how to edit sketches. Took me a day or so to discover and learn how to exploit the edit modes. Fiddling with your drawing, I see better how they work. Some of my 2D drawing experience is messing with me a bit; need to make the mental switch to the idiosyncrasies of Solidworks.

    Your other suggestions are appreciated; I'll do more poking around to try to get better.

    Hate hassling you, but do have one question: Say I have a hard copy of a line drawing, such as the side view of an airplane. I can scan it in easily enough, and would like to import it into SW and use sketch to outline it to turn it into a SW drawing. How do I do the import?

    I have a gazillion other questions, but I probably learn more fumbling and poking around.

    Thanks again....

    Ron Wanttaja

  2. #12
    cwilliamrose's Avatar
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    There are a number of ways to do any model in SWx. The one I posted is just the first method that occurred to me. I could have done one 1/4" thick bracket, mirrored it to create the second one and then done the ring last to tie them together. Or I could have done one bracket and half a ring and mirrored that half model to create the full part. Either of those would result in three features in the tree just like I had for my first shot. I could have done the ring before the brackets but that wouldn't change the feature count (I prefer short feature trees). The thing I like about my first approach is the top, right and front planes are all centered on the finished part in a reasonable way where some of the other options would have left things off-center or required making additional planes.

    If you want to trace over a scanned drawing you'll want to open a sketch on a plane that makes sense for the orientation your part requires and go to TOOLS|SKETCH TOOLS|Sketch Picture. Once imported you can move the picture, scale it, distort it, etc. I generally like the picture to remain in its own sketch which I can leave showing or hide as needed. I use a separate sketch to draw on and once I don't need the picture anymore I just hide the sketch it's in so it's always available later for reference. If you need more help that this just let me know.......
    Last edited by cwilliamrose; 01-07-2019 at 10:57 AM.

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