Step 9Enjoy the Finished Marble Track
You may find that the track needs a bit of fine tuning from time to time. It usually isn't a big deal and most of the time the only maintenance you will need to do is replacing batteries. I find that I need to replace batteries about every 4 or 5 months.
If you don't have a room where you can run a track around the entire perimeter of the room you can always build a smaller marble track. Here is a video of one I built for my other son.
The pictures below are of the two finished main sections of marble track. Something like this can be a challenging project, but the rewards are endless as you watch your kids playing with it.
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Can you make an instructable for making this marble machine on this page?
(the smaller one)