I start cutting and drilling parts from 20mm mdf to see if they fit right, after that I am going to use the mdf parts and my router table to shape the 20mm aluminium.
Click image for larger version.  Name: 32089549_2090858987862089_388262981974097920_n (1).jpg  Views: 306  Size: 138.5 KB  ID: 24205
Click image for larger version.  Name: 31969778_2090859181195403_4031857535022530560_n.jpg  Views: 255  Size: 85.2 KB  ID: 24206
Click image for larger version.  Name: 31963954_2090860027861985_1011361280906231808_n.jpg  Views: 251  Size: 84.4 KB  ID: 24207