The glue referred to in this project is T-88 two-part epoxy. T-88 is the standard in homebuilt aircraft, especially with bonding spruce as this project entails. It is mixed with a 1:1 ratio by volume, according to the manufacturer's specifications.

The original Pietenpol plans call for brass tacks to be used to fasten wood together. This fastening isn't for structural integrity, but instead used to hold the piece in place while the epoxy sets. Once the epoxy has set, it is the primary bonding force for the joint. For this project, I elected to use stainless steel staples. Staples are more convenient (especially with a pneumatic stapler) and the stainless steel construction means there will be no corrosion over time. The weight of the staples is minimal, and likely less than if brass tacks were used.