Hi:
Well, on your last comment, After I forgot to finish mine, LOL!LOL! Sorry about that, One letter of the Alphabet does not an answer make. Anyway, When I was little I got shuffled from Florida to Western New York Twice a year. Money was non existant in N.Y. and almost so in Fla.
I built ships as I have described before as fountain finds, With typing paper overlays to cover the B.B.Holes! paint them Testors Square bottle light grey and shift parts around till the model was restored, Models other than that were gifted. Then I learned how to use paper and cardboard on my models if I wanted to bash them. The idea for the thin plastic that was clear came from one of those ventures. Someone( One of my relatives, maybe) Gave me Revell's 1/32 Mercury Montclair Phaeton 4dr. and of course that was before they put the window plastic in the kits.
Promise not to laugh! I got this bright idea. Scotch Tape! Remember they didn't have the tape that was frosty yet. I would take a new roll and take a length of it and pull it off the roll. Lay it on a piece of glass shiny side down. Then Carefully put another on top Sticky side down. Very carefully Burnishing the bubbles out. Viola" Window material for model cars and the Revell Tugboat.
Dad came home one day when I was in the process of doing that( My Foster Dad, That is) Finally got to stay Put! he goes to his dresser and pulls out a new shirt and gives me the plastic insert from the collar! "Try This" He Says "I think it will work better" Well, it sure did. And I had already learned my lesson about glue and clear parts from planes. So, even then I used Elmers liquid school glue to put them in. Plain and simple models were rare enough I couldn't afford to mess them up!
So you see, that's why I am a proponent of using found material to help on the builds. If you cannot afford it, there is always something out there that will do the job well, Testors and Pactra didn't have flat paints back then So, we used Talcum Powder to flatten it! The more you put in the flatter it got. But you had to be careful or you might put in to much and all you had then was Talcum Powder colored paste!
I could go on But, I don't want to bore you. Or commandeer your day