So after checking out the great designs of Truss rod covers, I decided to make one myself and see what happens. I went to my local music shop (Music Sales Meyerton, great store with great prices) and they gave me a small cutoff of maple to test with. So I got my test piece and measured out the cover.
But elas, I was not carefull enough and 2 pieces broke and only one came out unscaved. So after having it 80% done I fitted it, and it fits fine. Now I just have to finish it.