Castings are only as rough as the sloppiness of the operator.electrode wrote:[ Just curious as it does seem like it could come in handy for rough castings of aluminum.
Thanks
This one was done in 125 grit sand
![Image](http://img.photobucket.com/albums/v313/James64/20161118_162851_zpscuvqznkw.jpg)
3D printed patterns need to have the surface smoothed out. Most are using hi-build auto body primer/surfacers
then a quick coat of something smooth and shiny.
Otherwise, it wont come out of the sand mold well.