1/2" BSP thread clearing die for LN2 dewar

thingiverse

I frequently utilize LN2 dewars at work, and I've found that ice buildup on couplings is a significant hassle that requires time to remove before attaching a hose. To resolve this issue, I designed a thread-cutting die with a 1/2" BSP thread. The idea behind the design was to create a die that could withstand the rigors of handling ice without damaging the threads. To achieve this balance, I chose ABS as the material for printing the die, knowing it would be tough enough to move the ice but not hard enough to compromise the threads. Four strategically placed holes in the design help clear away ice as it's removed and prevent it from fouling or compacting into the threads. I uploaded two versions of the model to my online platform: a solid one and another with a split in its body, just in case the first version printed slightly too tightly. Thankfully, the solid design worked perfectly for me during testing.