Does anyone know anything about 3D printing. My knowlege is very limited. I am currently building a 1/35 Tamiya Stuka Zu Fuss, and during the built I have lost one of the aming sights.

So, I was wondering if I would be better to have the part recreated with 3D printing and correct the out of scale dementions of the kit part, or would I be better to scrath build the replacements. Does anyone know the cost of these services?