An Upholstered Chair Cushion

comments (1) June 11th, 2010 in blogs

DaveRichards David Richards, contributor
thumbs up 2 users recommend


Our reader, Nollie, asked about how to make a cushion for a dining chair he's working on. Here's a simple approach to create a cushion. I'm using a model I did awhile back of Kevin Rodel's Arts and Crafts Side Chair for this example. In this method of creating the cushion, I'm just after the look of a cushion so I didn't worry about the parts inside the upholstery.

To start I drew a face for the bottom of the cushion. I drew it in place on the chair so I didn't need to worry about any dimensions to make it fit. I rounded the corners at this stage.

I extruded the cushion to height, made a component of it and copied the component over to one side. In some following steps there is a potential for the creation of some tiny faces that SketchUp won't fill. To bypass that problem I'll work on a copy which will get scaled up before those faces are made.

Then I temporarily deleted the top face of the cushion and drew in a profile for the round over. I could have foregone the Push/Pull operation and drawn the profile of the round over up from the bottom face but the cushion is slightly lower at the back than the front and so having the edge surface to use as a reference makes it easier to draw the profile correctly.

Next we'll scale the copy of the cushion component up by a factor of 100. The exact value isn't important. Just make it big. You can see the chair near the origin in the screen shot, above.

I selected the bottom face of the cushion, got the Follow Me tool and clicked on the profile. Follow Me creates some unwanted geometry which we'll delete. The green face on the top can be selected and deleted. Then the exterior edge of that face can be deleted.

You can see that with the top face removed, there are some "wings" at the corners. This is a normal thing because the profile was wider than the radius of the corners. Notice there is no intersection between the two wings at the corners. At this stage the wings are part of the curved surface of the cushion.

Before we can delete those wings, then, we'll select all of the cushion geometry, right click and choose Intersect>Intersect Selected. In the image, above, you can see there is now a line dividing the wings. They can now be deleted. After deleting the wings, we'll get the line tool and trace an edge of the large opening to fill in the face over that opening. Deselect the component and then delete the large one. Hit Zoom Extents to return to the chair and presto! You have a cushion.

Dave

 

 

 



posted in: blogs


Comments (1)

Nollie Nollie writes: Thanks very much David. It is very handy to have Folks like you and all the others on the web to help out. Here in SA it is learn all by your self.
Nollie
Posted: 12:38 pm on June 18th

You must be logged in to post comments. Log in.

Advertise here for as little as $50. Learn how

Save up to 52% on Fine Woodworking

 

Become a Better Woodworker

About Design. Click. Build.

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.

Buy the Video
Don't miss Dave Richard's brand-new DVD/video download, The Basics.

Buy the Book
Get Tim Killen's popular eBook, the Google SketchUp Guide for Woodworkers.

Basic SketchUp Tutorials 
Learn the basics of building furniture in SketchUp with these classic posts from the Design. Click. Build. blog.

Creating a Project Plan in SketchUp
How I Draw in SketchUp
Axes in SketchUp
The SketchUp Move Tool
The SketchUp Rotate Tool
The SketchUp Scale Tool

Materials, Colors, and Textures
Applying Wood Grain Skins in SketchUp

Easy Dovetail Joints in SketchUp

Digital Project Plans


Download and modify SketchUp files for select projects from Fine Woodworking. View all.

Top Sellers:
Matt's Monster Workbench
New England Pine Cupboard
Garden Bench

Meet the Authors

DaveRichards

DaveRichards

I am a Biomedical Equipment Technician. I maintain anesthesia and respiratory equipment for the largest medical facility in southeast Minnesota. I...
view profile
Killenwood

Tim Killen

I am retired from Bechtel Corporation after 36 years in Engineering and IT management. I grew up among woodworking machinery in...
view profile
FineWoodworkingEditors

FineWoodworkingEditors

...
view profile