Lavaman Tray backing

This is the Lavaman backing for use with Caverns of Cinder expansion for Shadows of Brimstone

to be used with the following card holder
http://www.thingiverse.com/thing:622503

Update : This is the wrong stl file, it is missing the attachment portion for the card holder. I will fix this and upload the correct version when i get time.

Update 2 : Finally had time, and found a better way to fix the file. Uploaded a new file that will work