3 hole US version. Use V3 version files. Rounded corners for comfortable contact and easy to remove in regular 3D printers.

Changes added on Verkstan design as per feedback received from local hospital staff. 2 prints on same layer to print more in one job for printers like Ender 3.

 

Special credits:

3DVerkstan and team,

Prashant Sakhuja,

Parul Sakhuja,

Miguel Clement,

All supporting Volunteers,

Special thanks to local hospital staff for providing valuable feedback.

Instructions:

Tested with layer size 0.28mm for faster prints. 10% infill. Press corners from side holder and frame untill side frame gets separated from dots. You should hear some clicks. Do the same for other side. Frame should move separately from bottom layer. Use scrapper tool to brake dots on sides if not separated by hand force.