Firewall and Bulkheads
Here is the main wing center section spars. Nice and golden Anodized.
First you have to construct the control column mounts
Fit some extra cover plates and drill holes for the fuel piping and electrical wires
Align the center section uprights, see the nice wing bolts.
This is the firewall, it is a thin piece of stainless steel for fire protection that will be reinforced with some aluminium strips
Some of the spacer and gussets for the firewall
The whole firewall clecko'ed together
The firewall ready to be riveted