I use my index finger to spread glue on the rim. It gives you best control on spread and amount of glue that you get on the rims surface so it is easier to get it even and avoid getting glue past the rim edges and on the rim braking surfaces. Just have a rag dipped in mineral spirits next to you so you can clean up your hands and fingers if it starts getting messy. The mineral spirits takes the glue right off and is not as harsh as other chemicals that can dry out your skin. You can also use the mineral spirit dipped rag to quickly clean off any glue that gets on other parts of the rims that you do not want it on as you go.

Chombi

Chombi