As a college student I don't have the money to buy buy parts so I tought I could laser cut in 3mm MDF my own frames!
I haven't made I prototype, laser-cut it at your own risk (:
PS: I don't recommend to 3d print this model.
• It's an only lasercut file.
• The little foots must be placed before gluing the three bottom pieces.
• (I'm almost sure) you can use plastic straps instead of glue for the remaining pieces of the frame.