This is a really small, fast and easy to print coupling.

I made this for a friend who broke several coupling while installing this drawer slide (manufacturer Art-nr: 42357936) and he needed to buy a whole kit just for replacing this component. I think it might be useful for another drawers slide models, but I am not sure…

I made them a little bit more robust (about +0,2 mm) and they must be tested but I think they are a little more resistant than the originals, at least my friend didn't broke none of the spares.

Infill: doesn't matter, 0,2 layer height, they work very well in PLA.

I hope you find this useful.

Links for model of the drawer:

German: https://www.haefele.de/de/produkt/unterflurfuehrung-vollauszug-tragkraft-bis-30-kg-stahl-steckzapfenmontage/42357936/?MasterSKU=P-00870019

Spanish: https://www.hafele.com.mx/es/product/gu-a-para-montaje-bajo-estante-extracci-n-completa-vap30-capacidad-de-carga-hasta-30-kg-acero-montaje-con-espiga-para-embutir/42357936/?MasterSKU=000000000000ac1b00010023#SearchParameter=&@QueryTerm=*&Category=FQAKAOsF7S0AAAFqYZeWXnYm&@P.FF.followSearch=9980&PageNumber=1&OriginalPageSize=12&PageSize=12&Position=6&OrigPos=40&ProductListSize=132&PDP=true