In setting the inside stakes, care is taken that their points do not pierce the bark. No inside stakes are required at the ends, as here the outside stakes are so close together in opposing pairs as to hold the bark in a sharp fold along the centerline of the cover. This of course is also true of the stakes beyond the ends of the gunwales. After a few lengths of bark have been thus secured, they are faired between the stakes by inserting thin strips of split sapling, or battens of wood or root, along each side of the bark, under the inside and outside stakes. These battens are placed about halfway up the upturned bark. Some builders used long wooden battens, as this gave a very fair side when enough lengths were secured upright; others got the same results with short battens, the ends of which were overlapped between a pair of stakes on each side. [Illustration: Figure 40 MULTIPLE CROSS SECTION through one side of a canoe on the building bed: at the headboard, middle, first, and second thwarts. Gunwale is raised and supported on sheering posts set under thwarts. Crown of the building bed is shown by varying heights of bottoms of the four sections.] When the bark has been turned up and clamped, the gores may be trimmed to allow it to be sewn with edge-to-edge seams at each slash. This is usually done after the sides are faired, by moving the battens up and down as the cuts are made, then replacing them in their original position. The gores or slashes, if overlapped, are not usually sewn at this stage of construction.