* Miller Syncrowave 351 * Miller CP 302 * H&H 100 KVA Spot Welder * H&H Seam welder * 36" X 96" vacuum atmosphere welding chamber Seasoned welding operators produce consistent spot, seam and fusion welds and are fully certified to OEM and military specifications. Aero's vacuum chamber allows welding of materials such as titanium in an inert, oxygen-free atmosphere.