Hittinuhard t1_j25wxq2 wrote
Reply to comment by lemonylol in Help drilling a hole through kitchen countertop & flange of undermount sink for a water filter by [deleted]
The problem with coming up from the bottom is that you can blow the face out. If it's a marble or granite type surface it wouldn't be able to handle the heat and have fun trying to use water to keep the bit cool while working underneath the sink.
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