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Thread: SU Adirondack Chair

  1. #1
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    Question SU Adirondack Chair

    Hi
    Please find attached my zip file showing a sketchup style chair which I will be building. I have built three milled from western red cedar from our woodlot, but didn't like the style and are not good enough to show. Learning to design, and build with sketchup is also a quest. Your comments are welcome.
    Cheers from the Canadian Rockies.
    Attached Files Attached Files

  2. #2
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    Hi Irv, nice chair.

    Are you looking for comments on your SketchUp model or on the design in general?
    Irony: The opposite of Wrinkly

  3. #3
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    SU Chair

    Dave I was looking for comments both on improving the design of the chair and also suggestions to make the sketchup modelling process more effective and efficient.
    Irv

  4. #4
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    Well, I like the design of the chair. It looks like it would be comfortable and a fairly easy build.

    The model has some issues, however. I suspect a number of them are due to the low precision setting and the fact that Length Snapping was enabled. Also, Profile edges shouldn't be turned on while you're drawing. Those thick lines along with the Units settings make it tough to draw accurately.

    Going by scene, here are a few other things I've noticed.

    Start Cutting With precision set higher (1/64"), the arm rest length is shown as 27 37/64". This dimension is actually not measuring the overall length of the arm rest. It dimensions out to 27 39/64". Seems like nit picking but I doubt you'd really cut the arm rest to that length on purpose. It might not matter in this model but sometimes being off just alittle on one component can throw off the rest of the model developing cumulative errors.

    Also, the curve on the inside of the arm rests shows facets indicating the line segments dividing those faces have been hidden instead of softened. Although the curve will still be made of faces, softening will make that less apparent. If you drew the shape of the arm rest and then used Push/Pull, those edges would have been softened. I'm guessing something was done differently.

    The two outer slats for the back rest have some reversed faces and in the same area, an additional curve line that is out of place. I'm curious about how you drew these parts.

    Look closely at the ends of the angle legs. There are some unneeded faces at the back end. Again, I'm curious about how you drew these components.

    Also, for some reason, these legs are not related components. They are, instead, groups. This means that to fix them, you'll either have to fix each one individually or fix one and then replace the others.

    The piece that supports the backrest at arm rest level is missing a couple of faces.

    Building Since the components are just copied over, the same problems are present.

    Relax The texture you've applied is applied to the outside of the components and not to the faces themselves. This makes it impossible to correct alignment of the grain. If you edit that material and change it so the dimensions are 4" x 4", you'll see that most of the elements in the chair have the grain running the wrong way.

    To fix the problem, you should delete the texture from the In model section so that everything is set back to default colors. Then start again with applying textures. Open each component for editing and then apply the texture. If the grain alihgnment is incorrect, select a single face, right click, choose Texture, Position. Rotate on the expanded view of the texture and choose Rotate, 90.

    All of this was meant as constructive. I hope you don't think otherwise. If you want more specific information about any of this, feel free to ask. Also take a little time to peruse the Design forum. I think you'll find some things that might help. Also check out Design. Click. Build. on the Fine Woodworking site. I've done a number of posts there most of which have demo videos linked to them.

    Keep plugging away. You're getting the hang of it.
    Irony: The opposite of Wrinkly

  5. #5
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    SU Chair mgmt

    Thanks Dave for your comments. You have pointed out problems that will take awhile to work through on SU. I believe my main problem was not creating proper components(I created groups) from the beginning. Other problems showed up when I had a sandbox layer of 1 inch by 1 inch squares on the start up scene to help layout curves on individual pieces. Dimensioning with these numerous inference elements caused errors which I didn't fully fix. I removed the sandbox layer later to simplify the model.

    One lesson learned is to build the model creating components(not groups) as I go and let them carry through the different scenes.(easier to modify or correct). I will work on the other lessons.
    Thanks
    Irv

  6. #6
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    Irv, I don't think the sandbox tools are at all appropriate for use in laying out curves. They weren't intended for that application. If you need some guidance in laying out your curves, drag out some guidelines with the Tape Measure tool. Also it may sometimes be easier to draw a larger surface to work on and then cut away the waste.
    Irony: The opposite of Wrinkly

  7. #7
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    The reason I was trying the sandbox tool, was as a concept to allow printing out individual pieces with a proper sized grid as a full size printed template, hence marking and cutout of pieces, could be easier. I agree now the sandbox wasn't the right tool.
    Irv

  8. #8
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    A grid behind the parts would be a handy thing in some cases. If you want to do that, I think the best thing would be to make a couple of crossing linear arrays of lines. Make a component of them and put them on their own layer. AS you found out, lines in the background can be annoying if SU's inferencing engine is trying to inference to intersections on them. I wouldn't even draw the grid until after completing the parts arrangement.
    Irony: The opposite of Wrinkly

  9. #9
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    Updated Plan for Adirondack Chair

    Thanks Dave for your sketchup advice, attached please find the SU zip file that improves the following:
    1. Has a 1"x1" grid layer with dimensioning on separate layer on startup scene.
    2. Fixes component items that had reversed faces etc.
    3. Simplifies the Relax scene as a material solid color on all components. Please note that wood grain has been sacrificed, as it was time consuming to reorientate all faces of each component according to grain direction.
    If it can be build better or designed in SU better, your comments are always welcome.
    Cheers
    Irv
    Attached Files Attached Files

  10. #10
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    Irv, I took a quick look. Have comments but no time at the moment. Maybe tonight or tomorrow morning.

    Dave
    Irony: The opposite of Wrinkly

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