I designed this antenna mount for the Hyperlite Floss 2.0 (standoff distance: 31mm). It will hold a SMA pigtail (without a mountig bracket, like with the ImmersionRC Tramp). It is designed for the Realacc Uxii stubby antenna - don't know for sure if it works with the Lumenier Axii. The bottom beam is for zip-tie'ing a small LED to it.
Print in TPU with supports activated.