E3D Cyclops clone extruder build
Cyclops hotend has two filament inputs and merges them into one output. My Prusa i3 clone already had a Chimera extruder, but I was curious about the single nozzle solution.
extruder
Building Volcano Bowden extruder
If you are impatient and don't want to wait too long for your print to finish you can look for a solution in the E3D Volcano hotend. It is able to extrude filament a much greater speeds than a normal (V6) extruder. But it comes at a price of sacrificing the print quality.
Leaking hotend extruder repair
It can happen that molten filament can leak from the hotend. This usually happens when there is a gap between the heat break hotend throat and the nozzle. This is the result of poor assembly of the extruder's hotend part.