Soft Top Anti-Trapping Circuit for BMW Z4 E85

thingiverse

The roof mechanism on my BMW Z4 E85 roadster features an ingenious "anti-trapping system," designed to prevent fingers from getting caught as it closes. This clever system consists of two interlocking plates - an upper and a lower one - that slide smoothly across each other, ensuring safety above all else. However, I've encountered a problem with the left-hand lower section on my Z4, which has broken beyond repair. In response, I've designed a replacement using advanced 3D printing technology and PETG material. By employing a 0.15mm layer height, I was able to create a component that boasts similar strength and flexibility characteristics as the original part. For those who need both left- and right-hand versions, I've generated STL files for each one. Interestingly, the right-hand plate is a precise mirror image of its left-hand counterpart, making it easy to print and assemble. Initially, my design was a faithful replica of the originals, but printing proved challenging due to the curved base. To overcome this obstacle, I simplified the designs to facilitate smoother printing and better finishes. It's worth noting that PETG can exhibit varying levels of oozing, so I've intentionally made the hole for the mounting screw small. Consequently, users may need to drill out the hole slightly to accommodate a self-tapping screw. A crucial reminder: these redesigned parts were originally created as safety features by BMW, and using them comes with inherent risks. By printing or installing these components, you acknowledge that you're doing so at your own peril. I accept no liability for any injuries or losses resulting from their use.