Quote Originally Posted by beerdart View Post
Is it possible to make a 3mm filament block with 20mm spacing and NEMA 17 steppers.
The Itty Bitty Double FLEX is on 27mm centers to accommodate E3D hot ends, but also because the mechanics of the two extruder bolts require more than 20mm.

The original Itty Bitty Double Extruder does have the hot ends on 20mm centers, but the filament channels are longer and curved, to make room for the bolts. It's designed for NEMA14 motors, but RobH2 posted a derivative for NEMA17 motors here: http://www.thingiverse.com/thing:581839

I've never tried it, but I think a few other people have.

Oh...ha! Now that I read through the comments, he mentioned that you provided feedback at the time (December '14).