prusa i3 : flexible filament

[carmelo42]

Hello

I want to print flexible filament with my Geeetech Prusa i3.

I know I have some adjustments to do (I think I have to print a piece to guide the filament).

Can you tell me what to do ?

thanks

[zhangxueyou]

Extruder temperature: about 240 degrees
Hot bed temperatrue: 50-60 degrees
Printing speed: less than 20mm/s