Appropriate material for model railway hook

#1

Hi to all people,
new in this of 3D printing world and not expert in plastic materials i have to send here my first object which is a grafting hook (model railawy for a wagon coach in H0 scale) that must be sturdy but also a bit flexible and possibly smooth. Preferably the material should be black or dark but i can paint it. I would be led to discard the resin (hard but too little flexible?) but I do not know if it is better Polyamide or Polypropilene or ABS ?
See in attached image of the pieces, which the measures in millimeter.

Hook
Hook1086×768 80.2 KB

I ask, gently, for advice.
Sincerely
adrtab

#2

Polyamide, Polypropylene and ABS are along the right track.

Also consider MJF. It prints as a frosty gray, but i.materiase can dye it black. It’s definitely not smooth, but it doesn’t have stiction like a resin does. Like polyamide, it holds its shape and is great for parts that need to flex, but my impression is it’s a little bit stronger. It gets a nice texture when sanded.

I have no experience with polypropylene prints, but I suspect it’s going to have similar properties to MJF.

#3

Hello Adrtab,
If you are looking for the flexible material Polyamide can be the best choice for you.Although natural surface of polyamide has a sandy, granular look, and is slightly porous It is possible to polish and dye your 3D-printed model to create smooth and colored objects.
This finish is available in Yellow, Orange, Red, Bordeaux, Green, Blue, Petrol Blue, Purple, Brown, Black and White.
Please find more information about this material following the link:
https://i.materialise.com/en/3d-printing-materials/polyamide
Best regards,
Anna