Making a Windsor Bowback Side Chair - Part 3comments (2) June 29th, 2013 in blogs
In the last session, I compiled the Windsor seat component with spindle and leg sockets. I also carved a gutter decoration separating the spindle socket platform from the front of the seat. I also traced the Sight Lines from the imported Fine Woodworking drawing, that we will need to place the Legs
We could do some sculpturing of the seat at this stage, but I usually postpone this until I have all components in place.
The video below shows how I connect the Legs at the proper angle to the seat blank. In the case of this Fine Woodworking article, Sight Lines are shown in the drawing. Often I make Windsors from photos or orthographic drawings showing the Front and Side Views. These typically do not show Sight Lines but show compound angles for the Legs - that is, an angle in the front view, and another angle in the side view. For these cases, the procedure for placing legs in SketchUp is slightly different. I may show this procedure in a later video.
Back to the Fine Woodworking article..... the leg tenons are shown tapered. This is a typical option for Windsors, however I prefer using straight tenons without tapered sockets. I also wedge the tenons at the top of the seat.
Also, Figure 3 of the article shows stretcher tenons at only 5/16-in. diameter. I think this was an error in the drawing, as stretcher tenons are normally 5/8-in. diameter.
Figure 3 also shows different lengths for the Front and Back Legs. I think the note is incorrect in that the Front Leg is shown as the shorter one. I think it works out best to use a common leg length at the 19 3/8-in. dimension. Normally, the top of the seat is at 18-in. off the floor at the front, and there is a slight tilt of the seat so that the top of seat at the rear is 1/4-in. lower.
So far in this video series, I'm showing the seat without a tilt, and on the green axis. Later I will adjust the tilt.
Here are the turnings for the Windsor Chair. I've traced over the scanned drawing from Fine Woodworking.
Here is a picture of rotating the leg into position using the Rotate Tool on a plane that is perpendicular to the seat and on the Sight Line.
And here is the result of placing both legs and copying to create the whole seat with all four legs.
The next session will be on placing the stretchers.
posted in: blogs, Sketchup, windsor chair
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