Description - Open School BC | Home Page

Next, look to the left to see the decimal equivalent of the drill bit size to use. Looking to the left once more, you will see the alphabetical, numerical, or standard drill bit size to use. Once the hole has been drilled to the correct size, a tap of the size required for the bolt will fit inside to create threads. Estimated Time. 5–10 hours. The time for this activity will depend on the ... ................
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