Having exact angles is nice on a machine but is not absolutely necessary. With experience using the machine you have you can achieve the meets correctly. For example, those that repair gemstones have to find the angle of a facet to re cut or polish it without having any knowledge of what angle it was cut at. What I am saying is you do not need to spend $5000 or more for a machine to enjoy our hobby. I presently own a graves mk4, older ultra-tec, and a facetron. All are capable of cutting complicated designs.