Zbrush Tutorial - Using subtools to make new subtools. (alternate method of masking and extraction)

Decided to make some tuts, just sharing a cool trick that I use to make new subtools from old ones so I end up with a mesh that’s a bit easier to make dramatic changes to opposed the results of extracting from a mask. In 1080p now too like a fucking boss. Shockingly, this video is only 58 meg too. 0_0