Quirks with the Push/Pull Tool
In Chapter 12 of my eBook, I show the “building” of a Windsor Chair. In Step 3, I say to use the Push/Pull Tool to give the shaped seat its thickness. Sounds easy enough, but you may have been surprised to lose faces on the bottom while creating the thickness.
Here is the seat face after tracing over the shape. There are several lines and circles on the face, some of which pertain to the top of the seat, and others to the bottom face. Of course, the tracing however shows all of the lines on the one face.
When creating the seat’s thickness, pick the Push/Pull Tool and pull up one of the segments as shown below.
Now have a peek at the bottom of the seat, and you will see that the face that was pulled up, is now missing on the bottom.
SketchUp assumes you are making a recess or hole, I suppose. To remedy this you need to tap the Cntrl Key (or Option Key on the Mac). This creates a new face, and saves the original one on the bottom surface. When tapping the Cntrl Key, note that the Push/Pull icon is accompanied with a + sign.
Now if we peek at the bottom of the seat, we see that the original face was retained.
To complete the seat’s thickness, use the Push/Pull Tool (after tapping on Cntrl) on each of the other face segments.