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Williamsburg - Egg & Dart Carvingcomments (3) January 26th, 2014 in blogs
Each year, I've been attending the Williamsburg Conference "Working Wood in the 18th Century". It has always been educational, instructional, and inspirational. After returning home each year, I have a list of new ideas for the shop and for SketchUp.
This year's program topic was corner cupboards, dining tables, and sideboards furnishing the early Southern Dining Room. A very ornate and beautiful table from MESDA (Museum of Early Southern Decorative Arts), was a major project for the Williamsburg Cabinetmakers this year. The piece is called the Buckland and Sears Sideboard Table.
It shows off an enormous amount of carving including a beautiful Egg and Dart design. Or as the Williamsburg cabinets say, Egg and Tongue.
Here is the carving performed on stage by Bill Pavlak. I will show in this video how I would re-create this egg and dart design in SketchUp. As I've shown before in previous Blog posts, I import the photo, make it full-size, and trace over the shapes with the line and arc tools.
Here is my traceover of the shapes in the picture. When I turn on X-ray, you can see the background picture while tracing.
This is the profile cross section shape of the molding on which the carving is produced.
Since we have symmetry in this egg and dart, I will shorten the trace over to the essence of the carving that is 1 3/16-in. wide. So here is the essence. And I move that over to connect with the molding profile.
I will use Push Pull to create a molding length equal to the carving traceover.
Since I will use the Intersect function and this model is quite small, I scale up the assembly by a factor of 100. You can see that I've pushpulled these shapes back into the molding.
After cleaning up the waste, there is a missing curved face in th gap between the tongue and the egg. The face dives down from the front edge of the tongue down to the bottom edge of the egg. I am sure there a number of plug-ins that would create this missing face, but I just created the triangulation between the two edges by hand with the line Tool.
After scaling down by a factor of 0.01, I copied and flipped alternating groups to make a long strip of molded carving. There are edges here that need to be removed.
Here is the final cleaned up version.
posted in: blogs, Sketchup, williamsburg, sideboard, Egg & Dart
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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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