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Obviously a CNC will be the best tool but I dont have one.
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I figured to use a router I will need a jig but to make one its time consuming so I rather spend the time sanding to finish my gears. I think its faster
I dont need to design the gears since I bought the plans and all I have to do is glue each pattern to my plywood.
My thanks to all
You don't have to have a CNC. There are services out there than will run your designs on their CNC routers and send you the finished gears.
The one I used is
CurlyWoodShop who made my gear, from my digital designs, I think
these are the ones they now offer. I'm sure there are other CNC services, I just don't know of them. It was fast, easy and affordable. From the patterns I received, I made four of the large, seven of the medium and six of the small gears. I recommend designing the gears with no smaller internal radius's of 1/8" so you the smallest router bit required is 1/4". The smaller 1/8" dia. router bits are too easy to snap off unless you are SUPER careful.
Good that you don't need to design them and have the plans, at least if the plans are digital also. I believe the CNC shop would have produced digital designs (for generating the required G code) for additional cost, but I did that design work.
Rick