Sorry, realised this after posting, unfortunately I don't have access to a lathe though. I suspect getting one made would be costly.
Also my 9mm thru axle fork has a sort of lip above the hubs end caps and without the axle the wheel will happily stand in place. I suspect these "lips" would be in the way of the end caps of a 15mm thru axle hub. Maybe the OD of the end cap is consistent throughout the axle types. Although that seems unlikely given the fact some axles are significantly larger.
Maybe the OD of the end cap is consistent throughout the axle types
There isn't a standard for most axle types, so there's a mm or two of variation in the end cap OD even for the same axle type. AFAIK, only SRAM 15×110 Boost specifies the end cap diameter.
Sorry, realised this after posting, unfortunately I don't have access to a lathe though. I suspect getting one made would be costly.
Also my 9mm thru axle fork has a sort of lip above the hubs end caps and without the axle the wheel will happily stand in place. I suspect these "lips" would be in the way of the end caps of a 15mm thru axle hub. Maybe the OD of the end cap is consistent throughout the axle types. Although that seems unlikely given the fact some axles are significantly larger.