Using a metal carriage allows the machine to handle the weight of frozen meats or heavy roasts without flexing, which ensures a consistent slice thickness.
To maintain the metal carriage, it is recommended to wipe it down with warm soapy water after use, but avoid harsh abrasive cleaners that could scratch the aluminum surface.
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By vevor
The actual carriage (the sliding platform where the meat sits) is made of cast aluminum, not plastic.
While it may have a smooth, coated finish that resembles plastic in photos, it is a metal component designed for durability and food safety.
The food pusher (the spiked attachment used to grip the product) is indeed made of heavy-duty plastic, as you noted.
By vevor