Double drybox output connector and enclousure passthrough
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Simultaneously connect the output from two (Un)original Drybox's (2x5 filaments) to the same MMU through the enclosure
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- Printables
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- Prusa Parts & Upgrades
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- Creative Commons — Attribution — Share Alike
I have two (Un)original Prusa Drybox cases and wanted an easy way to print with filament from either case. This splitter block is what I came up with. To change which filament to print with, pull the current filament back behind the splitter block and push the new one to the MMU - no need to swap spools or PTFE tubes. If you need to use both of the two filaments that share the same output, one of the PTFE tubes can be moved to an unused input, but I would try to arrange the spools in a way that minimises those cases.
The splitter block is modelled with as short an internal filament channel as possible without adding noticeable friction. The splitter block attaches to the rear opening on top of Original Prusa enclosure, and is fixated with a 6mm M3 bolt from inside the enclosure. A hex nut is used in the cut-out of the mounting block to secure a tight assembly.
I printed my splitter block using PTEG, 15% infill, 3 perimeters, and support from the build plate. See the .3mf project file for the complete settings.
Note: If the inside PTFE tubes feel a bit loose (some of mine did), a 5x PTFE Tube Clip can be used to space the tubes out to apply a bit of tension/friction against the splitter block (see the photos from inside the case). The natural bending or pathing of the tubes from the MMU to the splitter block also helps keeping the tubes in place - they come in at a slight angle. With the PTFE Tube clip my loosely fitting tubes stay firmly in place.