pic: 4587-Sheet Metal Chassis V.2

[Cash4587]

Originally Posted by Greg Woelki

This frame is quite beefy but keep in mind that the sharper the corners the higher the stress concentrations.

I've actually changed majority of the lightening holes to parallelograms. They look nicer to me, and I have used a pretty big fillet on all the corners (3/16 radius)I have not however put any Swiss cheese effect on the drive rails yet. They are not finalized, neither is the belly pan.
Seen here:
http://prntscr.com/40gv2q