Start with rolling a slab.
Use any cylindrical object to assist you in forming a cylinder.
Follow all usual steps (score & slip) to close the form. Then add a bottom and a top pieces to completely enclose your cylinder.
Smooth the surface. Let it leather dry.
Use a ruler and measure the cutting line. It should be very precise.
Use needle tool to start cutting (do not use knife). Slowly cut through the walls of the cylinder. It might take a few times, but do not rush this part. You do not want to deform the cylinder and you do want to get a clean cut.
Smooth both cut surfaces.
Ideas to decorate:
As long as light shines through!
My student’s 2D AP Portfolio piece. It is not considered 3D because he entered the piece casting light in a photo as his final piece.
An example of my student’s family tree vase. This could be your theme but you need to have light casting out. This can be very complicated or simple. The main thing is to let the clay get leather hard before taking AWAY supported structure.Lantern lesson textured slabs
And another’s Egyptian vase.