I used this box for casting tin.
A model placed within, then filled up with molding sand - this works well.
Beware that the plastic melts, where it touches the hot metall. But don´t bother about it - it will work anyway.
A more detailled description (german) and more pictures can be found here:
http://www.3d-druck-community.de/thread-4373.html
I place a freecad file as well - so you can change the size.
I released a casting ring as a customizer as well:
http://www.thingiverse.com/thing:1882985
| bottom_frame.stl | 12.4KB | |
| sand.FCStd | 36.9KB | |
| top_frame.stl | 7.3KB |
