Set Design Idea.

We are planning on building a coffin. It will be a rectangular shape box with detachable sides that we can detach in order to film. We will also build it in the studio. To build this we will need wood and something to hold it together but that will also let us take sides away. I think the only problem we have with building this is will be the practicality of it. We would like it to look like a coffin as we are unable to buy a coffin and bury it in the ground and then film it.