Chris Schwarz's Blog

Learn to Lay Out an Ogee

OgeeLayoutIn the November issue of Popular Woodworking Magazine, you’ll find my 6-Board Chest article. The opening photo (shown below) shows three chests – mine (the blue one), Tim Henricksen’s (the yellow one) and Ty Black’s (the green one). My chest (the one I teach you how to build in the article) has an ogee on both ends.

There are multiple ways to lay out an ogee, but this is my favorite. Now the fastest way to lay it out is to use your body parts – just eyeball it and wing it. But I like to take the extra minute or two to make the ogee, which is sometimes called a “cyma recta” or “cyma reversa.”

Step 1. Draw the inverted “V” shape as if you were making bootjack ends for this chest. The point of the “V” should be slightly lower than where you want the bottom of the chest to lie.

Step 2. Set your compass so it bisects one of these lines at the halfway point of the line segment. This is the only compass setting you need, by the way. Mark the center point of each line segment.

Step 3. Use your compass to strike four intersecting arcs as shown in the photo. Two arcs are from the ends of the line segment. Two are from the center point. Note that where you strike these arcs determines if the ogee will be a cyma recta – where the curves bend to a horizontal – or a cyma reversa – where the curve bend to the vertical. This ogee is a cma reversa.

Step 4. Place the point of your compass at the intersection of an arc. Draw an arc that bisects your line segment. Move the point to the other intersecting arc. Strike a second arc that bisects your line segment.

Step 5. One side of the ogee is complete. Move to the other leg of your inverted “V” and repeat the same process to make the mirror image of the first ogee.

— Christopher Schwarz

Six-Board-Chests-1

11 thoughts on “Learn to Lay Out an Ogee

    1. ausworkshop

      I just saw Roy do this in an old episode of the Woodwright Shop last night, I got the season 3 DVD recently in the sharpening pack from shopwoodworking.com the blanket chest episode I think, from 1983

  1. cstar54

    There isn’t any need to smooth the curve because it’s one curve intersecting another that is tangent to the other. Thus the intersection is only a point. Part of the problem with this post is Mr. Schwarz seems to have jumped a couple of steps in the process. Also the layout photo stops just short of showing where the center point for the lower curve.

    I’m kind of surprised Chris hasn’t added a reply to update the missing steps or a more informative picture of the final layout. Must be polishing his anarchist tool chest for WIA!

    1. Megan Fitzpatrick

      It’s probably my fault – I posted that on his behalf, with text that didn’t fit in the article. When Chris is back, I’ll see if he has more photos of the process and add them. Or, ya know, remember to bring in my dividers and shoot a video of the layout process for you.

  2. deric

    The bottom part of the ogee requires another board to be abutted to the end of the board with the ogee. The center point will be on the second board. The directions were a bit confusing to me. I had to go over them a few times to get what he was saying. That being said, you should see some of the directions I’ve tried to write out. These were great!

    1. Jim McCoy

      A straight forward way to do this is to butt the two sides together bottom to bottom with the insides facing up. That way all the layout lines and arcs are just mirror images of each other for each side and you have the necessary “extensions” to layout and draw the bottom arcs.

      If you happen to own By Hand & Eye by George Walker and Jim Tolpin there is a very good description of these steps in there as well.

      Jim

COMMENT