So I decided to make a large quad  (550mm MtM)D

Got the centre plates laser cut in MDF
Arms used were 1/2" (12.7mm) aluminium square tubing.

Centre plates (2.5mm MDF)




Temporarily assembled together (double sided tape  )



Another view





What's left.

1. Drilling holes through the aluminium tubes for the screws
2. Adding the 3rd centre plate to guard the control board.

Specs:
MtM:550mm
Frame weight: 175gms

Setup I have chosen
1. 4x E-Max CF2812 Motors
2. HobbyWing Quattro (20A)
3. KK Multi V5.5
4. Battery to be decided later 

Any changes to the above setup welcome 

It looks pretty cool. Please keep posted with as much details, photos and videos. I am a n00b, I want to follow the process.

sure . will keep you posted

From where did you get it laser cut.?