Objetos para imprimir

http://akirasan.net/vela-de-cumpleanos-3d/

http://akirasan.net/baliza-vial-sos/

https://www.impresoras3d.com/reutiliza-botellas-de-plastico-con-impresion-3d/

https://www.impresoras3d.com/impresiones-3d-utiles-para-tu-cocina/

https://www.impresoras3d.com/que-hacer-con-las-bobinas-de-filamento/

Buscadores de piezas

https://www.yeggi.com/

https://www.yobi3d.com

https://www.stlfinder.com/

http://tridimensia.com/

https://cults3d.com/

https://free3d.com/

https://grabcad.com/

https://www.thingiverse.com/

https://www.youmagine.com/

https://www.myminifactory.com/

https://pinshape.com/

http://www.3dshook.com

https://3dwarehouse.sketchup.com

Referencias

https://www.3dnatives.com/es/top-10-de-las-mejores-sitios-web-para-descargar-archivos-stl-27012016/