The other crack is at the bottom (6 o'clock) position and it starts almost at the edge of the bottom spoke and travels around the rim at a slight angle. This crack will be a bit more involved to fix.
A pad of fine (#000) steel wool was used to dress the spokes as a first step. The steel wool removes any surface dirt and grime on the stainless steel spokes and hub.
The hack saw included in the POR-15 kit is used to saw through the cracks all around the rim to enlarge them right down to the steel core of the wheel.
The 3-sided file is used next to file a V-groove into the sawed crack.
Here you can see the V-grove in the upper crack. The purpose of this enlarged groove is to provide a good bonding surface for the epoxy putty.
