High strength (470,000 PSI)
carbon fibers are used as reinforcement in high performance structural composites
for aircraft applications, recreational and industrial products. Carbon
fiber filaments are finer than a human hair. These filaments are bundled
together to make a fiber of 3,000, 6,000 or 12,000 filaments which is called
a "tow". The tow is sized with an epoxy compatible material to improve the
handling characteristics. It is then wound on a cardboard core holding from
4 to 6 pounds of fiber. 1 Lb. spool.This size will be available in the small
units shown. The 3 K and 12 K sizes are offered in full spools only. The
3 K tow is used primarily by weavers. The 12 K is difficult to wet out but
can be done by diligent brushing. It appears that the 6K tow will prove most practical for homebuilding
applications.