3d printers

Now that these are getting more affordable, and cad programs are allowing far more detail to be added, has anyone gone down the print your own trucks, buildings etc route for model railway layouts
I'm certainly becoming more interested in buying a printer, mostly because i bought some 3d printed L&B coaches and i think they are actually undersized , either that of the 4 wheelers i got, are over sized, and i would like to have a stab at printing some 4w coach body's myself because the genetic ones i have just are very plain and i saw a video of one someone had planned, printed, and it had far more detailing,

 

Try here for a starter's viewpoint.

 

Well i took the plunge and ordered an printer, now i have to refresh my Drawing skills, I did TD at school, but that was in the days when CAD was just a dream, in some programmes mind, more like drafting, than using a mouse,
I have been told that Sketch up for web is a good basic cad program and its free, for the basic version, so I've down loaded it, and now the fun begins, learning basic cad drawing, before i start to actually print anything, can anyone offer any advise in using these programs, for instance, scale sizing etc, I'm going to start simple, maybe a small building like a wayside shelter and booking office, and go on to designing as chassis for some coaches, then some bodies for my narrow gauge lay out.

 

I've yet to find a topic which isn't covered by a selection of YouTube tutorial videos, ranging from cr@p to very good.