3d printing materials

Delrin
http://forums.reprap.org/read.php?184,290357

http://www.polymerplastics.com/mechanical_delrin2.shtml

http://www.polymerplastics.com/images/dataSheets/DSDelrinII.pdf

http://www2.dupont.com/Plastics/en_US/assets/downloads/design/230323c.pdf