Backup your files often It's a good practice, I'm just now dealing with wooden houses, and in my case I've several files for one model, IE: hub1 (when starting), hub_attached (when decide to attach all the small pieces in one), hub_uvw (uvw wrapping stage), and so on, so I've all the files for each step I've done, so I can back when needed.
Anyway, nice work so far.
3com
Laptop: Lenovo - Intel(R) Celeron(R) CPU 1005M @ 1.90GHz
OS: Windows 10 (64) - Ram: 4 gb - Hd: 283 gb - Video card: Intel(R) HD Graphics
