Dry-box filament pass through, with filter

Three part Filament filter and pass through for your dry box designed to minimize filament contact with air.

The "outside" component is designed to go on the outside and is threaded for an M10 pass-through PTFE fitting

Center/Filament filter component is optional and can go inside or outside the box (I think Inside make more sense) with a dish removed to allow for a sponge to drop in as a wiper/filter

Inside component goes inside and has slots for M3 nuts. (The outside piece is counter-bored for M3 socket cap screws)

All "feeding" surfaces are angled to help feed filament though initially (with a centering cone in the outside bore to butt the PTFE into)

I designed this with my Prusa MMU2S in mind, but it should be compatible with most printers/feed systems.

Also required to build:

• 2-6xM3 socket cap screws, just don't drill holes in the box you won't use (length depends on thickness of drybox wall, minimum will be about 20mm, I recommend 25-30 and trim if needed)
• M3 nuts, count depends on how many screws are used.

Print instructions

Category: 3D Printer Accessories Summary

Three part Filament filter and pass through for your dry box designed to minimize filament contact with air.

The "outside" component is designed to go on the outside and is threaded for an M10 pass-through PTFE fitting

Center/Filament filter component is optional and can go inside or outside the box (I think Inside make more sense) with a dish removed to allow for a sponge to drop in as a wiper/filter

Inside component goes inside and has slots for M3 nuts. (The outside piece is counter-bored for M3 socket cap screws)

All "feeding" surfaces are angled to help feed filament though initially (with a centering cone in the outside bore to butt the PTFE into)

I designed this with my Prusa MMU2S in mind, but it should be compatible with most printers/feed systems.

Also required to build:

• 2-6xM3 socket cap screws, just don't drill holes in the box you won't use (length depends on thickness of drybox wall, minimum will be about 20mm, I recommend 25-30 and trim if needed)
• M3 nuts, count depends on how many screws are used.

  Print Settings

Printer Brand: Prusa

Printer: i3 MK3 MMU 2

Rafts: Doesn't Matter

Supports: No

Resolution: .2 mm

Infill:

15%

Filament: Prusa PLA, ABS, or PETG should all do great whatever you want
Notes:

Filament filter may need flipped on the bed. I designed this to have almost no overhang at all.