My back rim has had a wobble that has prevented me from adjusting my brakes as close as I’d like them. In the past I’ve done a minor spoke adjustment with the rim on the bike and using the brake calipers as guides but I having some spare time this weekend I made a truing stand that has given me a much better view of how (badly) centered my rims are and the actual source of the wobble. At first I thought it was a spoke issue but after viewing the tire-less rim I’ve seen that one just one side the rim is bent out a bit.
The stand is simply two pieces of straight 1″x2″ wood spaced 135mm apart. Using a square I made sure that they were parallel. The stand is clamped down to a surface, this this case my table saw.
To make the axle slots I drilled 3/8″ holes in the center of the arms and then band-sawed out the side material.
My gauge for now is a ruler clamped in place which is fine for illuminating the rim’s problems. Obviously one could affix any kind of marker system in this area.