5th Generation Replicator - Filament feed system for reduced feeding resistance

thingiverse

UPDATE: An additional .stl file (5G+ Std Guide Tube.stl) has been added for 5th Gen owners with a Smart Extruder+ who want to reduce filament feed resistance and ensure a smooth feed path. This design uses the standard filament guide tube, which can be shortened by approx. 30% and provides a straighter feed path. No extruder cap fitting is required with this version; simply shorten the guide tube and you're ready to go! Please read the following overview/instructions: The filament feed system on the 5th Generation Replicator can be improved by reducing resistance along the feed route, which ensures that the right amount of filament is delivered on demand and prevents wear within the Smart Extruder due to internal stresses caused by pulling filament into the extruder. This modification was developed to reduce resistance along the 5th Generation filament feed route, which travels up from the spool, through a small hole, out of the filament drawer, then bends along the back of the machine before reaching the front drawer and entering the Smart Extruder. Additionally, the smaller guide tube used on the 5th Generation Replicator restricts filament flow more than that used on the earlier Replicator 2. After this modification is carried out, the filament route will be "straight up and over" like on a Replicator 2. The tubing used is from a Replicator 2 (although a slightly longer Teflon tube would be even better). The modification requires drilling two holes in the drawer of a 5th Generation Replicator but is relatively easy to carry out. Once drilled, the printed parts can be installed quickly along with a Replicator 2 guide tube or similar, and the use of 10mm cut from the original 5th Generation guide tube. Instructions: On a Replicator 2, the required parts were printed with Raft on, 4 shells, and 50% infill at 0.20 (Std) resolution; printing on a 5th Generation Replicator should be similar. Additional requirements include: 1. A Replicator 2 Filament Guide Tube 6mm Outside Diameter / 4mm Inside Diameter / min. 50cm length 2. A 10mm piece cut from the original 5th Generation guide tube Tools: - Drill bits up to 10mm - Reamer and round file