Great project, Gunnar! As I am using an SLA printer, I cannot help you with part orientation; SLA printed parts always have to be placed with a cerain angle to the printing base, parts positioned flat or perpendicularly to the base don't print properly.
Still, I would strongly suggest you increase the wall thickness for these large parts to avoid flexing and deformation. 0,8mm is extremely thin - I always try to have a thickness of around 1,5 - 2,5mm where material thickness can't be seen. Cockpit walls and wing trailing edges shoud be thinner, of course.
Can't wait to see more progress. Seems I should start looking for a PLA printer for large parts...
I kind of knew about part orientation, but had forgotten it all. I used to have a form1 SLA printer, but found it too messy and didn't use it that much. The resin got old and didn't work so well. It was messy and time consuming to clean the parts and needed sun or UV light to be properly cured. That said, it created parts with great detail. In the end, I sold it. I found the FFF printers to be more suitable for me, easier to print parts and more economical to buy filament instead of resin. I've printed a lot more with my Prusa i3 in the last 6 months than I ever did in 4 years with the Form1. I've seen the Form2 printers are much easier to work with though, that's the drawback of buying the first model of a new technology, it gets quite fast outdated. On the price point, I could buy 4-5 FFF printers for the price of 1 SLA printer and 9 (6,75kg) rolls of filament for a cassette with 1 liter of resin. It is important to think about what you want to use the printer for. For large scale models or rc models, I think the FFF printer is a better choice. For small scale and intricate detailed parts, the SLA printer is probably better, but you can buy a lot of models from online printing services for the price of owning one. What many people don't think of, is the time it takes to make the 3D models to be printed and the extent of CAD knowledge to possess to make them. You have no use of a 3D printer if you can't make the parts you want to print.
Anyway, I've already started to increase the wall thickness. They got too flexible for printing correctly. I'll try to keep the 0,8 mm for the cockpit walls. At the moment I'm not planning on opening any panels or hatches, so increasing wall thickness shouldn't pose any problem. I'll probably get some details made by Shapeways, like a brass undercarriage and some flaps detail. They need to be stronger to carry some weight. Litho plates and tin pewter foil are on their way. Riveting- and other tools are ordered, there's a lot gone missing in 20 odd years... Feels good to be back at the workbench