Door Hook for Social Distancing

A hook developed to help open doors without the need to touch them. I developed this part to be used at work where it is important to take every possible step to social distance.

The design incorporates two main features:

• A hook to pull on door handles
• An extrusion for pressing buttons.

The part has been tested in real world conditions for a week and shown to be extremely useful*. A loop on the top edge allows it to be attached to a lanyard so that it is always available when needed, and within easy reach. Care has been taken to make it as ergonomic as possible, with finger indents for two fingers and a concave surface underneath where the little finger can sit comfortably. There is also a 'stock' which allows the part to sit comfortably and firmly in the palm of the users hand while in use.

Files for the part both with and without my logo have been uploaded depending on the user's preference.

Test conditions included heavy doors with button press/fob locks.

Print instructions

This design has been printed successfully on a Creality Ender3 with the following settings:

Layer Height
Initial Layer Height: 0.2mm
Layer Height: 0.12mm
(If printing without logo, can print fully at 0.2mm)

Shells
Wall Count: 6
Top Layers: 7
Bottom Layers: 7
(These settings should give a strong part resistant to prolonged use)

Nozzle Size: 0.4mm

Infill
Infill Pattern: Gyroid
Infill Density: 25%

Materials
The tested design was printed in PLA, though any other non-flexible material is likely suitable.

The part is also designed to be printed flat with no support (though the fillets will make most slicers want to add some, it isn't necessary). For build plate adhesion, a skirt is sufficient and a raft will also work well if needed for your specific printer.