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Do you poke relief holes in pillars when using 4045H wax?

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This will be the first time I have ever made pillars and the reason I am asking is I was told by someone that you do not have to poke relief holes when using 4045H. I was told that you do your first pour to top of mold then after 3 hours it will sink a little then just do a repour. Has anyone done it this way or is it better to poke relief holes? Thanks.

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