How to adjust the hole size for Spiral Fluted Taps

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I am currently tapping various materials using spiral fluted taps. I occasionally have problems like Chipping of the tap, Tap Breakage, Tap welding among other issues. Are there ways to improve these situations ?

One solutions is to make the bored hole diameter as large as possible. I think if you adjust the bored hole to a larger and acceptable diameter, you may be able to solve all your problems.

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