Microscale Industries, Inc., Micro Krystal Klear is a liquid plastic adhesive and model window forming material. Plastic model builders can also use it to make light lenses or missile system lenses for laser guided ordinance. This product is great for adding windows to ships like the 1/350 scale Titanic model. This product an also be used to fill large gaps between plastic model parts that do not fit together well. I like having this product near my work table just in case it is required for any of these tasks described here. This water soluable product is recommended for plastic or railroad modelers of all skill levels.

I use as a window former in small openings in need of glass. It's easy as long as the opening is 1/4 or less. Just put on a tooth pic and spin in the window.

Best glue I've used for windows. Dries Clear, and pretty durable.