This particular design of soil blocker was created using BlocksCAD. The first step was to decide on a shape for the container for simplicity of holding in the hand and 3d printing, as a result a cylinder was chosen. Next was the compactor which needed to be comfortable in the hand and easy to hold. This would be cylindrical as it needs to fit in to the container with the addition of 5 elongated cylinders formed in to the shape of a four leaf clover (the fifth cylinder fills the centre to add strength). The recesses allow the fingers to sit inside and improve the grip on top of this sits a spherical pommel which fits in to the palm of the hand. In to the end of the compactor is fitted a pointed peg to make the pit in the soil block to accommodate the seed(s). Dimensions: Cylinder Outer Diameter = 50 mm Inside Diameter = 40 mm Height = 50 mm Compactor Height = 75 mm Width = 39 mm Peg Depth = 1 cm Width maximum = 1 cm Printing settings used: Layer Height = 0.15 mm Infill Density = 25 % Infill Pattern = Tri-Hexagon Base Adhesion = Brim. Size = 99.5 x 50.1 x 75.0 mm Filament weight = 57 g Filament length = 19 m Print time 6 hr 27 min