So, the last time I'd every driven spikes, or soldered a throttle (Onboard), or aimed a spitting Badger airbrush at rolling stock, was before my USAF change of station move from K.I. Siberia, er, K.I. Sawyer AFB in Michigan's Upper Peninsula, to Griffiss AFB in Rome, NY, right in the middle of that unpleasantness called "Desert Storm". 1991.   Fast forward some 28 years and a dozen optician visits later, here I sit at a workbench again.

I want to get this model out of the case and mask the windows in order to weather it and seal it.

I've cut simple square pieces of masking tape in the past, but not ones with curves and hard to get at like the windows of the doors.

Any links,  ideas, and techniques would be much appreciated.

Ok. 

Here it is. I have some pre-made bench work sections that I plan to use for a chainsaw layout. I have the following ready to go. 

22" by 10' solid 

(2)  16" by 5' section that are foam on frame work. I can put these at each end of the 22 * 10 to create a U and those can be staging etc. 

A few "musts, dislikes

Scale... HO or N, era I tend to gravitate to the mid-late 1970s.

I have a friend who wanted to get into model railroading. He has done that and it makes him happy to imagine what he might have, someday... The BIG problem is there are some serious learning issues along the way. He is now having A LOT of issues with derailments and poor running due to him doing everything opposite of what this experienced modeler has suggested (the list of faux pas is extensive). It is obviously frustrating him. Heck, it is frustrating me. I had no idea how bad an old Bachmann steamer really runs on bad track... It ran great on my track.