A modified clamp to fit a Cycleafer, and probably a Berlin Standard, bicycle lamp to the larger 35mm handlebars.
I've included the original Fusion 360 files, a version exported to STEP and the STL files. In separate zip files, so just download whichever is most appropriate for your needs.
For more information see my blog:
https://blog.discoverthat.co.uk/2019/02/cycle-lamp-bracket.html
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Technical
Printed with 1.6mm thick walls in PETG.
To assemble, it requires an M4x35mm or M4x40mm bolt and an M5x25mm socket cap bolt and nut plus some of the parts from the original clamp.