Wow! It does look like a cool educational tool. Great job figuring it out.
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Thank you for this post. It look great. I looking forward to seeing finish product.
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This is a fun build to make! The inner mechanism is really cool and now i understand how it works. This was one of my first builds i made 
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Good to know. Thanks @SunnyCee
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@SunnyCee
Once you complete this challenge, you’ll officially be a master of locks! 
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