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David Billington David Billington is offline
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Default cutting square hole cast iron table top

wrote:
I have an old cast iron table from a table saw. It has a small
rectangular hole in the center of the table that I want to enlarge for
a router. I thought of a metal blade and a jigsaw yet, that sounds
like it might not realistically work.

Looking for any suggestions..

Thank you,
Keith

A square file?. CI files really easily unless the edge is chilled, in
that case you might need to start with a TC grit file. This should not
take long unless the hole needs to be greatly enlarged.