In 1994, Brian and his wife Linda, started a consulting company called Spencer Design followed shortly by a manufacturing company called Spencer Composites Corporation (SCC).

Some of SCC's significant projects have been to develop filament winding techniques for new matrix systems. Two of the systems are inorganic, such as cement, and provide high temperature use capabilities, above 1400 ºF, and do not generate fire, smoke or toxic gases.

Filament winding techniques are also being developed for a new resin from the Naval Research Laboratory. This organic resin has a use temperature above 700 ºF. Unfortunately, it remains solid until it reaches approximately 500 ºF. Spencer Composites Corporation is currently developing components for the Navy using this system.

SCC has worked with BF Goodrich Aerospace in developing fairwaters and bearing supports for naval ships. Fairwaters surround the drive shaft as it exits the ship hull.

In the past several years, SCC has worked with companies in the petroleum exploration and production industry to develop improved products using composites. These products include pressure vessels to hold core samples in laboratory CAT scanners. The vessels are designed for continuous use at up to 15,000 psi and temperatures as high as 450 ºF.

SCC has patents pending on an inductively transparent drill collar. SCC has a patent on a new type of progressive cavity pump. Other oil field products include down hole battery cases and doublers for attaching together length of composite ribbon rod. SCC is also making rotors for high-speed medical centrifuges. These rotors can rotate at speeds above 40,000 rpm.

Other projects have included sounding rocket motor cases for NASA, pressure vessels, and a softball bat.