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Sipery 10Pcs Diamond Drill Bits 6mm/0.24inch Glass Tile Hole Saw Bits, Hollow Core Drill Bits Extractor Remover for Glass, Ceramics, Porcelain, Ceramic Tile?
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1 review of this product found across Reddit:
1 point
·
7th Feb 2022
I've used carbide bits as well as diamond(small as 3mm) hole drill bits(to extract off the broken carbide) to get those out.
These are what I used to drill out a carbide and bolt sandwich once.
If they break off, they're thin carbon steel sheet-metal that you can pull out with pliers, and they don't give a shit about drilling through both carbide and hardened steel at the same time.
I buy them for making PCBs, but they have a few uses.
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