Hi fdcox
This is what I would suggest,,,marble games have been around along time I would stop by a toy store like Toys are Us, and pickup a pattern made with plastic ,then use it with the brass guides to make your mable game in wood....or to make your template quick and easy...
http://marbleboardgames.com/ http://www.google.com/search?hl=en&q...=Google+Search
Amazon has a listing for over 1000 of them...

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Originally Posted by fdcox I want to make the following, but I am not sure how to make the right size pattern for this and what size bushing and bit to use.
I saw this (marble game) on the web; it is going to have Plexiglas on both sides with rails to flip over to let the marbles drop
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