Notes on the flexible filament configuration

Print temperatures: 230C nozzle / 40C bed

This configuration is a good middle-of-the-road default for most fleximble materials (ninjaflex, flexible PLA, filaflex, etc). Printing with flexible filament is a bit different than printing with a ridgid material like ABS or PLA, it's like pushing a rubber band through a straw with a great deal of force. Because of the massive ammount of material compression between the hobbed bolt and the nozzle, you lose a lot of the control you normally have when printing. The best way to print with the stuff is at as constant of a movement speed as possible, with lots of retraction and very fast travel to minimize stringing. This configuration uses a constant print speed of 30mm/s. This is ideal for NinjaFlex and has been shown to work with flexible PLA, filaflex and PVA. Depending on the material you may be able to increase the print speed a bit, but be sure to keep it as constant as possible to ensure a good print.

Here's a great writeup on printing with various flexible filaments: http://forums.reprap.org/read.php?1,269018,269018#msg-269018