OpenBeam 1.4 special mount for HotEnd. This part support Servo mount (standart SG90) Servo can be mounted on either right or left side of this part. A 40mm fan can also be added in order to cool down the hotEnd. For those who ask, the Hot end is the AluHotEnd V4 from http://3d-industries.myshopify.com/collections/hotends/products/aluhotendv4-3mm-post-sale Standard JHead will fit. You will find only V5 hot end but i guess the dimensions are the same. The models should fit the standard J-Head hot ends. The file called Polysoup.stl is made to plug directly the ptfe tube and locked with a 6mm (OD) PTFE tube with 4mm inner diameter for 3mm Plastic filament. The other model called openbeam_14_x_block_for_6mm_tube_extended V3 is made to be used with a Push to fit pneumatic component. It also has a prolongated filament guide so that the filament don't get stuck between the ptfe tube's end and the Jhead.top