Attach to side mount point with the M4 screws.
I printed a couple regular short arms (the small arm variant!), and a couple mirrored arms so I had more options to mount the arms in a configuration that I liked.
The UV lamp mount I used M5 20mm screws with a couple various sized washers to work with the attachment points of my Amazon 100w UV light.
Solder mask cure time is reduced quite a bit from the original USB UV light.
https://www.amazon.com/gp/product/B0CTM1XG8W/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Atomic Filament Silver PETG is the closest color I found to match the Carvera silver:
https://atomicfilament.com/products/metallic-silver-v2-petg-pro?gad_source=1&gbraid=0AAAAAC7tDKhujfpRJjyUl8Y54wX2rjJB8&gclid=CjwKCAjwmaO4BhAhEiwA5p4YL4sT3z8LEaSx9Coj7Mbp8Fkv6eEpgd5FIoBzt6DPrhw8iNoJeMfjiBoC6UUQAvD_BwE
The author remixed this model.
Combined these to create a UV lamp for PCB solder mask curing.