1/2" BSP thread clearing die for LN2 dewar

thingiverse

I use LN2 dewar at work regularly, ice build up on coupling is annoying and takes time to remove before a hose can be attached so i designed a thread cutting die with a 1/2" BSP thread. i printed this in ABS, the idea is that the ABS is tough enough to move the ice but not hard enough to damage the threads, the 4 holes help clear the ice as i is removed and stops it fouling the threads and compacting hard into the them. i uploaded 2 versions of the model, a solid one and one with a split in the body incase it prints a little tight, the solid one printed perfectly for me.