Burins were experimentally manufactured and utilized to differentiate the effects on wear patterns of raw material, method of manufacture, material utilized, and mode of utilization. Results of univariate and multivariate statistical tests are presented along with differentiating characteristics of three methods of manufacture (hard-hammer, softhammer, pressure), three types of raw materials (obsidian, basalt, chert), four materials worked (hard and soft wood; dry and soaked bone), and two modes of utilization (graving, scraping). -- AATA