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Adding Detailscomments (2) August 2nd, 2009 in blogs
In the previous blog post, Tim shows how he added some amazing detail to a SketchUp model of a cornice for a bookcase he built. Adding these sorts of details in a SketchUp model can be very useful in working out exactly how you'll build the project in the shop. Tim figured out quite quickly that it would be easier to build the bookcase to fit the cornice than to work the other way around.
TIm has given me permission to add a few comments related to drawing these small detail pieces. He's also loaned me the profile he drew to use as an example.
Tim mentioned scaling up the model before running Follow Me. For a small item like this, that is very important. Here's what you get if you don't. I left it turned inside out for the example but you can see that there are a lot of missing faces. This is due to their small size. SketchUp doesn't like to fill those.
So before running Follow Me, scale the component up and the faces will be created. There are a couple of option s at this point. As Tim mentioned, he used the Scale tool. An alternative is to use the Tape Measure tool. I measured the 5/8" height of the profile making sure to click at both ends of the vertical line. Then I entered 100 and hit the Enter key.
The size of the component isn't very critical at this point as long as it is large. Entering 100 results in the compnoent being 100" tall.
At this point, Follow Me will successfully create the turning. After the shape is made, measure the same distance again and enter the original length. to scale the component back down. If I am building a component in place in the model, I will copy the component off to the side, scale that copy up and do the work I need to do on that large copy. When I'm finished I simply delete the enlarged copy. The original copy of the component will show the same work done. This saves scaling down and possibly adjusting the position of the component in the model.
After running Follow Me on the profile, I had a bunch of lines wrapped around the shape because the curves were exploded.
These lines need to be softened or they'll appear as very heavy black areas when looking at the entire model. This can be done using the Soften function from the Contect menu or it can be prevented altogether by welding the edges before running Follow Me.
With the turning a component, copying it multiple times in the model will have little impact on the file size. There are a couple of other strategies that could be used to make this component even "lighter" in the model. One of those is to reduce the number of segments used to create the arcs. Tim's original uses the default 12-segment arcs. The arcs could be reduced to 6 segments without causing much of a change in appearance.Below, the turning on the right was created using 6 segment arcs. The one on the left is from the original version of the profile.
Another strategy would be to make only a quarter of the full turning.
This component can then be Copy/Rotated to make the parts required.
With the edges of the component hidden, There will be no apparent difference. This allows the same component to be used along the flat surfaces as well as at the corners and eliminates one component definition.
And here are all three versions of the turning side by side. They are hard to tell apart.
posted in: blogs, profile, Follow, me, cornice
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Learn the art and science of designing furniture in SketchUp with Fine Woodworking's official blog. Moderated by a devoted community of woodworkers, we feature step-by-step SketchUp tutorials on designing components, downloads of pre-built 3D models of furniture parts, and news and information about the evolving world of digital furniture design.
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