This is a replacement legs for a pair of sunglasses that i own.

After printing this model, i took it to a local glasses shop to get them custom fitted.

(the person used a heating machine to soften the PLA and bend them slightly to fit my head's curve. So if you have a skill and a heat gun, i guess you could do it by yourself.)

the stiffness of the joint was just perfect, the tolerance was just at the perfect point where the legs would connect to the glasses just right without the use of any adhesive