What fun DIY is if you cant make things your way ?
Why not use best of the both the world. You can make inner lining of metal foil inside wooden case.
Well, I have taken a vow not to travel 15km to do any cutting in any workshop, hence my local choices within 5km are limited for even the basic kind of metal work for front or rear panel anyways. In fact it is the prime reason this project is lagging since 2 months now!! (Did I beat HAL and DRDO)? First it was my odd sleep timings and the summer heat that sapped my enthusiasm to run around, then it is lack of competent workshops with promise of a great job to my specifications. It does not look like I will be able to find a workshop within 5 to 6 kms of my residence and the prospect of running around to the industrial area 15kms one way to encounter another bunch of sh*t faces with sloppy and shabby attitude towards my requirement is a real turn-off!
A vendor in Mumbai looks promising - he will cut as I want and deliver a complete chassis as a finished product
Regards