So far, using this one bottle, I've done 3 1/48 aircraft and a rocket, and there is still 1/3 left! This melts the plastic at the joint to create a strong bond. The brush is a little un-precise though, but some practice or an applicator like the touch-n-flow system will make it better. Use this in a ventilated room though, the smell becomes unbearable after a few hours.