Ultimaker Syringe Extrusion System (quickmountable)

thingiverse

Features: - Easy mounting and removal in seconds via Ultimaker Generic Head (http://www.thingiverse.com/thing:20775) - No z build space loss; if syringe crashes into the platform, it slides upward to z endstop without damage - Restrictions: dyneema thread stiffness requires pre-extrusion; custom extruders may need redesigned winder coupling part - Uses "Ultimaker BowdenFeeder Repair Kit" (http://www.thingiverse.com/thing:10799) and old style hobbed bolt with hexagonal head - Design inspired by "Ultimaker Syringe Extruder II" by joris, but redesigned from scratch for parameterizability and dyneema thread usage instead of plastic filament Materials: - 100 ml monster syringe (39mm outer diameter) with dyneema thread (80cm, 1mm diameter) - Two thick bicycle/motorcycle bowden tubes (id=2mm, od=5mm; 60cm and 15cm) plus 4x 5.8mm metal caps - Long zipties (preferably reversible), M3 Screws & Nuts - Ball bearing (7mm high, 22mm outer diameter, 8mm inner diameter) Tools: - File, knife, big needle Instructions: 1. Print and mount Ultimaker Generic Head (http://www.thingiverse.com/thing:20775). 2. Print lower and upper syringe rings ("Ultimaker-syringe_rings-lower.stl" and "Ultimaker-syringe_rings-upper.stl"), clean parts, and assemble onto syringe. 3. Print "Ultimaker-HeadMount_syringe100_v1.stl", ziptie onto syringe, and follow steps (3b) onward. 4. Print windercoupling ("Ultimaker-RealBowdenDrive_windercoupling.stl") and spool ("Ultimaker-RealBowdenDrive_winderspool.stl"), clean parts, and thread dyneema accordingly. Knot and pull into spool. 5. Print and assemble "Ultimaker BowdenFeeder Repair Kit" (http://www.thingiverse.com/thing:10799) without drilling; attach windercoupling without modification. 6. Thread dyneema through bowden tubes, knot, and secure ends of bowden tubes in their respective pockets. 7. Assemble all components by pushing parts together, locking if necessary with M3 bolts/screws. 8. Test with dough using skeinforge settings specified for syringe tip (adjust for 1mm diameter adapters). 9. Avoid mounting syringe too high to prevent scratching the printhead.