Bronica SQ-Ai Film Winder Knob

thingiverse

A custom knob for the Bronica SQ-Ai camera model, compatible with the SQ-A series as well. Initially, I thought the winder/cranks from the Bronica SQ would work seamlessly on my new Ai purchase, but unfortunately, that wasn't the case. Consequently, I created a simple replacement to resolve this issue. This custom knob is not an exact replica of the original and relies solely on friction for attachment. However, it has proven to be effective and far superior to searching for film without a winder in place. When printing this design, it's recommended to omit supports from the bottom layer. I personally print from the bottom up, but if your 3D printer struggles with bridging, you can flip the model upside down to accommodate the first layer as the top layer. In my experimentation, I attempted to utilize variable height layers in Slic3r PE, but ultimately found it didn't make a substantial enough difference. As a result, I opted for a standard 0.2mm layer thickness in PLA, although I plan to print another version in PETG.