Cast an inline 4 engine block with plaster mold

[retailer]

There is a video on youtube by a guy who goes by "myfordboy" amongst his videos he has a video of a similar process to cast a complex part, he 3d plastic filament prints the part, embeds it in casting plaster, melts the 3d printed plastic part out of the plaster which has now become a mold, and then casts into the mold using a regular sand casting process. It may not work for all parts as you obviously need the melted plastic to run out of the mold somewhere,

 

[Tim Wescott]

It looks good! Please post the rest of the build when you get to it!