Bob the woodworker has a special flexible brush for spreading glue but it couldn’t reach in the crack of a biscuit slot. We developed a two filament print using Tough Ink filament for the bristles and ABS for the handle. The bristles are about 1/8 inch wide and fit easily in the biscuit groove.The design was done using SolidWorks and Simplify3D makes the work flow of two headed printing streamlined. The part was printed on the FlashForge Creator.