The present invention is directed generally to building tools that are high quality, durable, and in some case lightweight and may include an output port assembly coupled to a mastic applicator container or housing. The output port assembly may have multiple sections that may be made separately and uniquely so as reduce tool weight, corrosion, and cost without degrading strength and durability. The output port assembly may be made bi-material and of different portions made by different processes. The bi-material may include, for example, a metal cone and a plastic mounting coupling portion. The output port assembly may be coupled to a mastic applicator housing or container, and sealed thereto using a preformed seal or a preformed geometric seal.