A Coffin – An Exercise in Angles
This simple looking box, can turn out to be a challenge in SketchUp and in the shop. The angles create the difficulty, particularly in corner joinery – in this case being dovetails. The video shows how I approached the design, while considering the procedure that I would use in the shop. In keeping a short video length, I will break the activity into multiple videos. This first stage produces the Side, Foot End, and the dovetails on this latter component.
Here it is with the top hidden….
Here is the view with the Side hidden…..
So I start with a shape and size of the Bottom. The outside perimeter of this face represents the inside dimension of the box. To create the Side, I pick the Line Tool and raise up to the height at the Foot end. Then I establish the higher length at the Head End.
From this bottom form, I create the Side and Foot End components. I will make them 1/8-in. longer at each end to ensure a good intersection at the dovetail joints. Since these components are 1-in. thick, that will give me 1/8-in. extra at each end joint. I like to have this extra length in the shop made components as well. After creating and gluing the dovetail joints, I hand plane the joints to remove all the extra material.
Here is an X-ray view of the dovetail joint with only half the joint finished. I’ll do the rest in another video.