I'm a Retired Engineer, an extreme-DIY type. Most all of the models here were made for my own use. They aren't elegant, and in most cases, you could improve the design. I usually quit when I get something that works, and more often than not, I don't bother printing the latest design changes if the one I am using does the job. I (and other users) would enjoy hearing about your experiences with any model; sadly, hardly anybody seems to bother.
3D Design Skill Level