Nice work. I like your design especially because the MD can slip in or out, without having to use mounting screws (dangerous and inconvenient for those of us who like to use our gear in various spots). You could always use what you’ve made as a template, if you ever decide to upgrade materials.
I made these end cheecks last summer, and I like them, but I am always wishing that I could just slip them off my machines for couch sessions.