Bought a Vilda handle, and a Vileda mop, without realizing that they were not compatible. One had a conical threading, the mop had a proprietary plug “click and use”. 

Be careful, this adapter may damage both the handle and the mop. This is especially true for the mop, if you insert and remove it frequently, some plastic will erode. 

Printing advice: I obtained the best results with the threading facing the plate and organic supports, in PETG. See the .3mf file for the “painted” supports.