Self-Seating Arrow Key Guard for Logitech MX Mechanical (Tremor-Friendly)
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Arrow-key guard that wedges between the keycaps: 45 degree funnels guide a fingertip, front shelf for finger rest.
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Model information
- Source
- Printables
- Category
- Office
- License
- Standard Digital File License
People with hand tremor, reduced dexterity or limited reach often hit the wrong arrow key. This guard turns the arrow cluster into four clear targets:
Self-seating: the ribs follow the exact shape of the keycaps (taken from Logitech official MX Mechanical CAD dummy, +0.5 mm clearance), so the guard drops into the gaps and stays centred. No glue, no screws, nothing touches the key mechanism.
Funnel openings: 1.2 mm 45 degree chamfer on every opening guides the fingertip onto the key; walls rise 3.5 mm above the keycaps so a sliding finger drops into the key instead of skimming across.
Front finger / palm-edge shelf (14 mm), overhangs the keyboard edge.
Printed upside down on its flat top, no supports: 61 x 56 x 6 mm, Bambu A1, PLA 0.20 mm: 21 min, 6.5 g.
Clearance test (trimesh): 0 mm3 interference with the official dummy, also with the guard shifted down 0.3 mm.
Tip: add two tiny pieces of double-sided tape under the shelf if your desk is bumpy. Files: print the "print" STL (flat top on the bed); the other STL is the as-mounted orientation.