I built the Prusa LACK case and keep my most used filaments in a dry box on top. I designed this part to have easy access to the filaments from the inside of the case.

FreeCAD file is included for customization.

Installation

Just drill some holes in the top of the table with a 7 or 8 mm wood drill bit. Place the part and glue it in place (superglue works fine). As it is impossible to drill clean holes in LACK tables, I included a bottom cover, that you can glue to the bottom to hide the mess. Make sure your PTFE tubes actually fit before glueing. 

Print info

Filament: Prusament ASA 

Printer: Prusa i3 MK2

Layer Height: 0.2 mm

Perimeters: 3

Infill: Gyroid, 20 %

Supports: None

Adhesion: Brim