This is a follow-up to Matthyro's suggestion of fibreglass tape for windows in N scale.
For HO, I found a plastic mesh usually used for cross-stitch, at the dollar store. Two 9x12 inch sheets for $1. The grid is about 1 scale foot by 1 scale foot. Can be cut easily into any size you want. The plastic is slightly thicker than standard cereal boxboard, so you can make windows by cutting an opening, using clear plastic to cover the back, and then inserting the entire window frame into the opening.
Can be cut to any size and any configuration. I will post a picture when I get the chance.
Andrew
For HO, I found a plastic mesh usually used for cross-stitch, at the dollar store. Two 9x12 inch sheets for $1. The grid is about 1 scale foot by 1 scale foot. Can be cut easily into any size you want. The plastic is slightly thicker than standard cereal boxboard, so you can make windows by cutting an opening, using clear plastic to cover the back, and then inserting the entire window frame into the opening.
Can be cut to any size and any configuration. I will post a picture when I get the chance.
Andrew