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I need to design a specific gear for a 30 West Coast sawdust/shaving bin. The picture of the gear is attached below. The gear I design needs to be as close to the exsisting gear as it can possibly be. The outer most radius of the gear is 18.75" for reference.
If you don't own one, purchase a Machinery's Handbook. It will give you every dimension and also explain how to draw cogs.