Lynda October 5, 2022 at 2:15 am The polishing of gold is friction and scraping with agate on top of the gold. The gold surface of the gold surface with agate has no loss, and it is easy to scrape the mirror of the gold. Log in to Reply
The polishing of gold is friction and scraping with agate on top of the gold. The gold surface of the gold surface with agate has no loss, and it is easy to scrape the mirror of the gold.
Scrape