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  • Regarding your question about using a bolt to create threads in wood: First, though it is possible to add carbon to mild steel so that you can temper it, it is a lot more effort than it is worth. Instead, go to a good hardware store or an auto parts store and get a Grade 8 bolt. They are a bit more expensive than mild steel but are harder than a bankers heart. You won't be able to cut the groove with a file because the steel is too hard, but you can get inexpensive diamond cutting wheels that will fit in a drill or a drill press and you can cut the groove with that. Be patient and don't let the bolt build up too much heat as it will draw the temper. That said, unless you are doing a lot of thread cutting, if and when your mild steel bolt gets dull, it would be as cheap and easy to j…

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    Regarding your question about using a bolt to create threads in wood: First, though it is possible to add carbon to mild steel so that you can temper it, it is a lot more effort than it is worth. Instead, go to a good hardware store or an auto parts store and get a Grade 8 bolt. They are a bit more expensive than mild steel but are harder than a bankers heart. You won't be able to cut the groove with a file because the steel is too hard, but you can get inexpensive diamond cutting wheels that will fit in a drill or a drill press and you can cut the groove with that. Be patient and don't let the bolt build up too much heat as it will draw the temper. That said, unless you are doing a lot of thread cutting, if and when your mild steel bolt gets dull, it would be as cheap and easy to just buy another mild steel bolt and cut a groove in it. Good instructable, thank you

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