In images of the Building Platform for the W17, you may have noticed two long strips screwed to the edges of the platform towards one end. These are used as supports and guides for bonding the stringers and gunwales straight.
They also serve a 2nd purpose of keeping the plywood sides from sliding off the platform while you maneuver the other end of the long panels in place. These straight strips are screwed to the platform a constant 20 mm in from the edge, so that there's space to clamp a stringer on either side of the strip.
Here is a stringer scarf being bonded on the platform. Wax paper prevents the part from bonding to the platform.
Stringers can best be prepared for scarfing using the same set up and router tray, as for plywood.
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