13th December 2012
I will make more models. I am trying to scratch my way to a decision.
There are a number of issues in my head:
I am still not sure about EPS. I would buy low density for cost reasons. This may waste LF performance potential even with a very hard polyurethane paint job.
Your method with wood is very inviting and I think it may not be much more expensive then EPS (even if I use the 'inverted offcuts' from a block of EPS)....unless I use Birch ply or a fancier ply
Also, I prefer wood as a material and a stained wood grain can often be a lovely thing.
If I were to include inverted EPS panels, I am not sure how I would implement them in a practical way with this symmetrical design (bearing in mind the inverted panels are meant to save money as they would technically be an off-cut from a giant block of EPS).
Jens, as I understand it, you use the high density stuff. Do you think 16kg/m3 EPS is a waste of time LF performance wise? I am less worried about toughness as certain paints can be surprisingly hard after a few coats.