Deflection due to 70N horizontal force:
Plate: 0.82mm
Profile: 0.01mm, again for Bosch 40x160
nice one ecat... your calcs seem to good to be true... fingers crossed
the valuframe 200x40 is much more dense than the Bosch so should perform better

square tube for best stiffness / cost ratio...
great price... would need some special fitting cosideratons to get the most out of its stiffness... internal spacers etc... making good stiff corners would take a bit of head scratching