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Drilling Cast Iron

Drilling Cast Iron

Drilling Cast Iron

(OP)
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?

RE: Drilling Cast Iron


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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