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Unread 30-05-2006, 18:40
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SgtMillhouse648 SgtMillhouse648 is offline
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AKA: Malhon Godwin
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Re: Bolt hole circle without a mill

Quote:
Originally Posted by sanddrag
What is the most accurate and repeatable way to make a bolt hole circle on a round part without the use of a mill? I do have a lathe which I could possibly use to scribe a cicle, but I still need 6 holes evenly spaced around the circle.
you all are making this more difficult than it needs to be. all you need is a compass. scribe a circle centered on the part the dia of the pattern. then DO NOT CHANGE THE COMPASS IN ANY WAY. place the anchor point of the compass on the circle you just scribed. make an arc through the circle. then move the anchor point on the compass to the intersection point, and repeat the process. do this all the way around the circle. wahlah you now have 6 points equispaced around the circle. centerpunch the points where the circle and arcs meet, and drill