Filament type: PETG or PLA

Layer height: 0.20mm

Infill: 15-20%

Supports: Yes

Wall count: 4

Estimated filament used: 11 Grams

Print difficulty: Easy

Print time: About 40 Minutes

Added materials:

• Key

• (1) M4 x 12mm screw (metric) / #8 - 1/2" screw (imperial)

• (1) M4 hex nut / #8 hex nut

• (2) M4 washer /#8 washer

Tools needed:

• Screwdriver or Allen key, depending on what screws are used

• Wrench or pliers to secure the nut while assembling the device

Post processing: None

Time to assemble: 5 Minutes

Assembly Process: Align the key with the device, insert a washer and screw through the key and device, then attach another washer and screw on the backside of the device to secure it in place.

Functional Use: This device is a printed handle that attaches to a key and gives a wider grip, so a person can turn the key with the whole hand instead of pinching it.

Relevant Occupations: Home Establishment and Management

Client Factors: May be relevant when grip and pinch strength or wrist range of motion is reduced.

Performance Skills: The wide handle lets the client grip and turn the key rather than needing to pinch it.

Safety Considerations: Ensure the key is secure in the device and can still function properly with its intended lock.

Limitations: It holds one key at a time. The screw can loosen over time. It is not a cleared medical device, so its use must be a clinical decision made by the treating occupational therapist.

Issues: None

Recommendations: None

Ease of use: Easy

Test results or review: The device works as intended.

Original file link: https://www.printables.com/model/213712-key-turner

Creator credit: Makers Making Change

License: Creative Commons (4.0 International License) Attribution-ShareAlike