This is the version of the soft materials extruder used in: http://advances.sciencemag.org/content/1/9/e1500758A newer version compatible with more syringes will be up soon.  This version is very capable, but it only works with a 2.5 or 1mL Hamilton Series 1000 gastight syringe.  ASSEMBLY: https://www.youtube.com/watch?v=I-Z2x4rWY30The dual mount will be available shortly.