Abdul, hi. Could I ask you what are you using to build all the panels, the metal looks "blueish". This may sound silly but, does it come with the kit or you bougth it locally?
Victor
P.S. Great job, keep it up.
Victor
you work on the polished side of the panel. and the unpolished side towards the chassis.
1.5mm is the thickness.
as Maurice said always use a thin marker .
So, you don´t need anything to avoid contact between those two materials?