This design is based on based on Ljubisa Popa – POP YU7EF design EF0604S. The details are CNC machined and some 3D printed. The antenna works great. Just few days after erecting, there was ES on 6m and I could work 1600km (1000 miles) with QRP rig on 5W as it is FM next door.
STL (Stereolithography, filesize: 3.87 MB), SLDPRT (SolidWorks, filesize: 12.2 MB), OTHER (Other, filesize: 9.99 MB)