I ask this question here because the other forums like general seem to get a lot of young kids answering who really have no clue. I finally am getting tired of changing tires on the bench, and have been looking at getting or building a tire changer. Most of them run around 90-100 or more for the better looking ones. The question is do you think if you had a stand with only a shaft (exact axle diameter) holding the wheel would be adequate and will no bend your rims/mess up bearings while mounting tires on/off? Otherwise I would need something to support the rim, and then we are starting to get real complicated. I know a lot have the rim resting on the changer frame, but I was thinking of building one with interchangeable axle shafts. I have four bikes to change tires for, and everyone has a different diameter axle shaft. I don't know if all the slop of a hard steel axle shaft banging around on the bearing race (sp) would be ok.