This thesis investigates additive manufacturing as an alternative method for producing casting patterns in sand casting processes. Traditionally, casting patterns are manufactured using CNC milling, which entails long lead times, high manufacturing costs, and negative environmental impacts. Surface finish plays a significant role in casting pattern production and is one of several critical factors in assessing a method's suitability. By examining additive manufacturing, its potential and suitability for casting pattern production can be evaluated.

A key aspect of the study is the examination conducted to assess the surface finish of radius and draft angles on casting patterns fabricated through FDM and SLS printing. Surface finish was evaluated by measuring the Sa value using a digital microscope. Achieving high-quality surfaces on casting patterns is crucial for ensuring smooth and uniform sand mold patterns. The investigation resulted in moderately rough surfaces on the radius and draft angles of the casting patterns, with the Sa value varying depending on the casting pattern's layer thickness, angle, and radius.

The conclusion of this study is that FDM technology holds potential for casting pattern production but may require optimization to overcome existing challenges. Introducing 3D printing into foundries could lead to a more efficient and sustainable production process while reducing manufacturing costs for casting patterns.