Cartesian Printer – Hybrid Extruder

Decided to go for a hybrid dual extruder system for a number of reasons. This hybrid is a combination of a bowden and direct extruder. The criteria of the printer includes the ability to print in flexible filament as well as other rigid filaments. Flexible filaments work better with direct extruder’s. The decision to make the second extruder system using a bowden type, came from the need to be able to easily adjust the height of at least one of the hot ends. This adjustable mechanism makes the leveling of a dual system much more easier for the user. A bowden system works fine for rigid filaments. The bowden hotend mount runs on two precision rails. The user will fine tune the height with a adjustable bolt. Two fan ducts were designed to allow prints to be cooled, allowing for higher quality particular for PLA materials.

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