Cut a set of wall sections out of the MDF color of your choice. This is a good time to use double sided tape and avoid cutting all of those tabs.
Use this EASEL "link":http://easel.inventables.com/projects/xqBzxQGsA5uj-D_njOYZhg
Cut registration holes for flip milling the corian base. Make sure your piece is 6" tall and between 10" to 12" wide.
Use this EASEL "link":http://easel.inventables.com/projects/MuH9T9oqbI_gqvv6bSR1Wg
For this cut use a square or fishtail 1/8" endmill.
Use this EASEL "link":http://easel.inventables.com/projects/DPqVRKwWqUvVokiun5KpfA
Flip the part over, using the registration holes as guidance. Mill the Chamfer onto the base, which will also cut the parts profile.
Use this EASEL "link":http://easel.inventables.com/projects/wWXpAHwaRLSzfHxWWXZWcg
The wall sections may require light sanding for a proper fit. You want these to fit, but be tight enough to stay in place without glue.