13 years of proud leadership in close tolerance and precision machining ahs earned SPT a reputation for excelling in machining various types of materials. SPT has both the resources and the experience in purchasing and machining not only common materials but in a long list of uncommon materials as well. We routinely work with a large array of metals and engineering plastics, from brass, aluminum, and titanium, to stainless and hard tool steels, to vespel and teflon.