This interesting extruder just popped up on Thingiverse yesterday:
http://www.thingiverse.com/thing:409594
![Image02_preview_featured.jpg]( "Image02_preview_featured.jpg")
It looks beefy enough where I wouldn't be worried about flex, and it uses a geared stepper motor which IMO is the only way to go.
The design needs mounting ears for attaching to T-slot, and the release lever needs to be extended on the right so that one can get a finger on it to open the lever for filament changes. Good base for a new design, though.....
http://www.thingiverse.com/thing:409594
It looks beefy enough where I wouldn't be worried about flex, and it uses a geared stepper motor which IMO is the only way to go.
The design needs mounting ears for attaching to T-slot, and the release lever needs to be extended on the right so that one can get a finger on it to open the lever for filament changes. Good base for a new design, though.....