You should not have to bother further about external conditions impacting the time needed for UV resin to cure if you ’re using it on a nice sunny day. Working in sufficient sun should negotiate the task since the UV shafts that the sun emits are able of curing the resin by themselves. On a cloudy day, however, you might want the backing of a UV LED Beacon.
More information at https://lightingvilla.com/can-you-cure-uv-resin-with-a-led-lamp/