Hands-free door openers - Cylindrical

grabcad

A stronger version of the hands-free door handles is available for heavier doors. Designed to withstand greater forces, these variants require a higher wall count (2 or more) when 3D printed for added stability. When mounted on their sides, no support is necessary.~Grip~Tape with electrical insulation properties works best; apply it by stretching the tape around the area where you will attach the parts. Rubber bands do not provide sufficient grip, while using double-sided tape or inner bicycle tire tubing is not recommended.~Advice and Caution~Be careful to avoid screws from protruding too far, as they may catch on your sleeve and cause damage to your clothing or scratch you. To prevent this, use M4x10mm screws if the door handle is narrower. Alternatively, apply another layer of insulation tape. Using these handles does not guarantee immunity from COVID-19, but it may significantly reduce the risk of infection._____*Version 1*For B's, ensure a brim to prevent them from toppling due to poor print bed adhesion.Wide: 60mm- 4x M4 12mm flathead screwsExtra wide: 80mm- 6x M4 12mm flathead screwsHole diameter: 20.8mm_____*Version 2* The initial design's flaw was that it would slip, especially for heavier doors but also for lighter ones given enough time. This issue has been resolved. To assemble the door opener: 2x M4x25mm rubber rawlnuts2x M4x25mm socket screws2x M4 washers2x M4x12mm 1x aluminum tube (10mm OD, 68-68.5mm in length for wide, 88-88.5mm for extra wide)A larger part B diameter will result in a steeper angle for the door opener. Test different sizes and find the one that works best for you; 20mm is recommended. If the handle is not open-ended, you can disassemble the door opener and fit it over the tape. Pros:- Does not slip- Handles higher loads better- Rounded edgesCons:- More hardware components.- More expensive_____*Update V2.1:- Improved text readability- Larger nut slots- Enhanced topology