How to modelize easily tapping / threading in 3DEXPERIENCE and export it in STL ?

Hello Community !

I'm new here and also starting in 3D Printing. My objective is to replace a part on a boat with a 3D printed one different from the original, with better functionality but I need to set the part at the same place and with the same fixing.

  • Original Part : 







  • My Model : 

I used the Standard Feature to modelize the external tapping.

My problem is the following : When I export in STL with classic 3DEXPERIENCE Export, the tapping is not represented and is not printed.



Question : Do I need to represent each filet or do we have a way to generate it more easily from our Standard Tapping Feature.

Thanks for your help.