threaded connector to transfer bodywash from one bottle to another. Includes holes/funnels for the pump tubes.

Print it upright without supports. I used 0.4mm nozzle, 0.2mm layer height, 3 walls, 3 top and bottom layers. There is a 0.2 thick by 0.9 wide ring 13mm up from the base, this was added to get the bridging to go on top of the inner funnel/wall which is only 2 extrusions thick. I haven't tested it without it, it might not be necessary. I've included the “bodywash bottle emptier no ring.stl” in case you want to try it without it.

It fits the Health Basics and Schwarzkopf bottles but did not fit the Dove bottles I tried.