Pond filter 1" BSP connection

Replacement pipe attachment for pond filter with a 1 inch BSP thread. Designed for an old Hozelock Bioforce 2200 filter, but should fit many more. Spigot suits 1 inch internal diameter hose. Nut is strong enough to tighten well (my first design wasn't, and split at the end of the thread) and PLA works nicely.