Mark, I just read the feed/speed chart . Great information. I am a knifemaker and a board of the Knifemakers Guild. Over the 25 years of making I have used just about every handle material out there. I currently build tactical knives with carbon fiber sides .I make the composite slabs myself and machine them on my CNC mill. Very hard to machine and dangerous as to breathing the dust and fibers is extremely bad health wise. A superior dust collection is a must. But there is one other composite listed that is far worse but not skull and bones marked on the chart. G-10 is nothing short of deadly. It is a glass base product and once breathed your lungs own it forever. Many knifemakers refuse to use it anymore. Thanks, Les