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drilling cast iron
drilling cast iron
i have a non-structural piece of cast iron about 1" thick that needs a hole drilled through it. are there any special requirements for drilling through cast iron, and would a normal steel drill bit work?
pylko,
it often helps to prevent cracking after drilling by chamfering the id of the hole at the top and bottom with a 45-degree chamfering bit. this is especially helpful under loaded washers and nuts.
david
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