Figure 1. Minerals that are soft and safe enough that they can be used (cautiously) with lathe tools,
shown in 5 different woods. The turquoise powder shouldn’t be in this group; its hardness would quickly destroy tool edges.
Figure 1. Minerals that are soft and safe enough that they can be used (cautiously) with lathe tools,
shown in 5 different woods. The turquoise powder shouldn’t be in this group; its hardness would quickly destroy tool edges.
