I'm building a rotating lamp for a small DIY project to learn about motors and timing belts/pulleys. As I am learning, finding parts that are small enough, fit a stepper motor shaft and reasonable priced is difficult.
I am trying to find a way to turn a lazy Susan that has a slip ring through the center within a space of about 6-8 inches. The slip ring is so that I can get electricity on the top with it still being able to freely turn.
What are the usual increments of timing belts? On Robotshop I found 8 in and 25in and that is it. To me this seems like a small range. Is this normal and have people found better supplies to offer a wide range of timing belts....in something like 1 in increments.
How much slop is in the timing belt? When attaching two timing pulleys do you usually have to add idlers or stretch out one of the wheels to get a good fit?
How close can timing pulleys be before there is not enough threads to move.