Drafting Duck Male Mold

thingiverse

Male Mold for making Drafting Ducks, Lofting Ducks, Spline Weights. There is a 3 degree draft making these suitable for sand casting. If cast in lead, at original size, the ducks will weigh 2525.327 grams or 5.5673930318 pounds For the uninitiated, a drafting duck is a heavy metal (usually lead) weight that sits on a drawing and holds a bent batten or spline in place. A batten is a flexible length of wood or plastic that holds a curve that can be traced onto the paper. These are used anywhere a draftsman need to draw fair curves which is a common need when drafting or lofting boats.