Our pond in the garden has a small design flaw. The dirty water intake and the clean water return flow are on the same side. This limits the water circulation and the cleaning of the water.
To correct this I want to move the clean water return flow to the other side of the pond. As there is nothing to connect the additional water tubes to, I need a connector to connect two tubes. As connector is not for sale, I decided to make one on the 3D printer.
PLA is not suitable for wet environments, it is biodegradable. ABS is more suitable for this purpose, but more difficult to print.
After about 10 designs and at least as many different settings, I succeeded to have a connector (with the help and ideas of many MSL fellows). The trick was: use tape as adhesive instead of glue, reduce printing speed to 25mm/s, fill to 80% and low fan cooling (20%).
Thanks to everyone who helped me to made this happen!