Memachaik
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Memachaik
The Mishnah in Masechet Shabbat (73a) lists memachaik as one of the 39 Avot Melacha. This is defined as scraping or removing a surface to leave a smooth remainder. For example, using sandpaper to smooth wood, or scraping hairs off a piece of leather to make it smooth [1]
Mimareach
One of the toladot of this melacha is mimareach-smoothing not by eliminating surface, but by spreading something over the surface. [2]