Bigger dustbin for Roborock S7

Description

Roborock S7 has a ridiculously small and hard to empty dustbin, presumably to force owners into buying an 0ver $600 auto emptying dock (which is essentially a whole vacuum cleaner that sucks the dirt out of the robot). It's almost like they count the filter as part of the dustbin volume. So I designed this dustbin, which is quite a bit bigger, and more importantly, has only one door and no annoying internal structure on the dirty side. For it you also need a 5mm cube rare earth magnet so that the robot detects it, some electrical tape and some 1mm thick rubber or foam sealing tape so that it seals better. You can secure the magnet with glue or by melting the plastic with soldering iron so that it holds it in (but don't heat the magnet itself too much). Unfortunately a bigger bin means the lid of the robot sticks up quite a bit and looks stupid, but what gives? It's probably too much of a hassle to disassemble the robot enough to remove the lid or replace it with a 3D printed one with a "power bulge". This is marked as a work in progress, because the latch does not close it in air-tight way when the filter is inside, but it becomes airtight enough to clean once inserted into the robot. Not sure about the cleaning effectivity though, but it's good enough to pick up a fresh 5mm coat of dust on the filter from cleaning a room that was vacuumed yesterday and has full-floor carpet (so probably comparable to stock box/slightly worse, as that would also gather about this much dust in one go). Also the magnet hole may need adapting to your magnet and all the tolerances are pretty tight, intentionally to make it seal better. The hinge uses a 1.75mm filament as axis, may need drilling out with a 1.8-2mm drill bit if too tight. Uses ordinary Roborock S7 filters. Also the filter model in the source .rsdocx file is a bit inaccurate, these protrusions on the output side of the filter are wrong.

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