Hi Corsair, fully understand as I very nearly embarked upon such a project for the EX-5 however I would have used thicker ply, at least 5mm-6mm as there would have been too much flex using 3mm for the over 135mm length required. Weight would have been an issue too as the Epiphone case for my EX-1 six stringer is big and heavy. In fact the EX-5 does just fit but rubbing on the extremities which poses a risk of snapping the pointy end off the headstock under any sort of bump. Gig bag was about $80 odd once it was freighted from USA. Custom cases worked out more expensive than the completed bass with all of it's expensive upgrades taken into consideration too.

Maybe Caravan manufacturers have something more lightweight yet still strong enough to work with? Hmmm, might look into that one day once all current projects have been completed.

Cheers, Waz