The goal was to create cheap and dirty camera glidetrack, at most based on materials available in building store:
Rollers and track are from sliding door mechanism. They are glued(yes, glued!) to aluminum angle-unequal profile. Additionally, they connected together via aluminum rivets. Feet are casted on polyurethane into PTFE form, knobs are made with aluminum.
Absence of device, which can sooth linear movement of carriage leads to some inconvenience in usage:(