4"x7" 3D printable foundry pattern for sand casting blocks for machining.

grabcad

Includes a pouring basin and runner. also has different thickness add-ons to cast blocks of different thicknesses. It has holes for 1/4" dowel alignment pins and smaller holes to insert wood screws as handles for removing the patterns from the sand mold. A light sanding and painting will make this easier to pull from the sand, but I have used it as is and it worked with slight sand break out.