Planking the front side of the for castle.   Everything went according to plan. Until I discovered a mistake.  How could I miss something as stupid as this? On one side I'm 3 mm (slightly less than 1 / 8th inch) out of center. Fortunately, the adhesive was not completely cured. So, cutting with a Stanley knife and breaking apart was still posible.   Sawing the frame so that it can bend.   gluing and clamping     Back