Finishing is a process in the foundry workshop. Process carried out. Polishing machine.(Also known as an abrasive wheel machine), the basic principle for selecting a model should be ease of operation, high efficiency, cost savings on labor and abrasive wheels, low labor intensity, long machine lifespan, and good economic benefits. This means choosing different types of grinding machines based on the size and geometric shape of castings. Generally, small pieces are ground using fixed abrasive wheel machines, while large pieces are processed with suspended abrasive wheel machines, where the casting remains stationary and the suspended abrasive wheel machine moves.   Activity within a radius, or use a portable pneumatic/electric small grinding wheel machine, which can grind any part. Although convenient, it is not very efficient, consumes more grinding wheel blades, has high labor intensity, and high costs. A handcart-type grinding wheel machine is more suitable for grinding flat surfaces or cutting off excess sprue and riser on moderately high castings. The simple handcart-type grinding wheel machine has a straightforward structure and can be homemade in any scale foundry, is easy to use, produces noticeable results, and its outline dimensions can be adjusted according to the casting.