Windscreen Chassis Hoop: First step was to manufacture a jig to enable manufacture of the screen hoop. I have modelled the hoop in CAD based on the scanned bodyshell, so I used this to manufacture the jig to make the hoop.
But once we received the hoop made from this jig, we found that is was miss-aligned to the bodyshell.
This was not a complete surprise, as the scan indicated that the cockpit was offset 10mm from centre line.
So we modified the jig to replicate this offset, and then had a second hoop manufactured. Once the position was optimised with the 4 supports, the fut of the second hoop to the bodyshell was good to go..