Moldea generates the template for a rectangular dish with sloped walls for slab building: set the width and depth of the base and of the rim, and the height, and the tool works out each wall as an exact flat trapezoid, enlarged for your clay's shrinkage, ready to print at true 1:1 scale.
Open the tool with the Rectangular dish preloaded →A rectangular dish whose walls open outward. Unlike the round pieces it has no curves: each wall is an exact flat trapezoid. The default is a 250×180mm base, a 290×210mm rim and 50mm tall — the width and depth of the base and of the rim are set separately.
A 250×180mm base, a 290×210mm rim and 50mm tall. The width and depth of the base and of the rim are set separately.
Because a rectangular wall has no curve: it's a flat trapezoid, without the approximation of a conical development. The pattern you print is exact.
Five: the base and four walls. The front and back are identical (cut twice from the same pattern), and so are the two sides.