Hi Scully! Are you on Chapter 1 or Chapter 2?
Click to reveal..
Assuming you are on Chapter 2, metal and a forge bucket should indeed create a pin for the water wheel. You'll need more than 1 pin.
Have you tried dropping a perfect villager or chief on the crafting hut to see what else is available for them to use? When you dropped your villager on the anvil, was there any mention of needing a higher level Construction Technology?

If you continue to have issues and would like us to review your game, we'd be more than happy to do so. In your game, please tap/click on the 'gear' icon and then the 'Help' button to send a message to Customer Support, or email support@ldw.zendesk.com, along with your User ID (which you'll find in the Options menu under the same 'gear' icon). Good luck! smile
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Kathy
Lead Tester
Last Day of Work