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If the hole cutter you are using often has uneven welding that causes the cutter to break teeth, high-temperature friction that burns and deforms the cutter, or a core that breaks easily, then you need to replace it with a better hole cutter.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.