In 1978 Spider entered the aerospace market by providing small component deburring to an aircraft company. In 1984, as their core services continued to expand and new ones were added, a move to a larger 8000 sq. ft facility was required to accommodate their growth. During the 1980's Spider's business more than tripled and in 1994 they moved again, this time into a 24,000 sq. ft. facility.

In 1995 Bill's son, Tim Trosper, took over management of the company and it continued to flourish. In 1998 ISO-9001 registration and AS-9100 compliance were achieved. Today, Spider's headquarters are located in a 103,000 sq. ft. facility in Rockford, Illinois where they service a multitude of industries including aerospace, agriculture, construction, hydraulics, medical and safety.

Spider's dedication to quality and service make it one of the premier leaders in the Midwest and fuel its continued growth and expansion.